Company lists · Data refreshed October 2026
Top 25 Email, messaging, and collaboration security solutions providers based in the United States
RevenueBase identified 395 company matches for email, messaging, and collaboration security solutions providers associated with the United States as of October 2026 and tracks 25,533 professional contacts across them, including 13,028 with verified work emails. New York is the largest hub.
This list covers company matches for email, messaging, and collaboration security solutions providers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest email, messaging, and collaboration security solutions providers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 14,972 contacts → | ||||
Exact match “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 2 | 2,272 contacts → | ||||
Exact match “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 3 | 1,369 contacts → | ||||
Exact match “Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 4 | 298 contacts → | ||||
Exact match “Sublime is the new standard for email security.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 5 | 238 contacts → | ||||
Exact match “Virtru is a global leader in data privacy and protection.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 6 | 210 contacts → | ||||
Exact match “Webroot, an OpenText company, was the first to harness the cloud and artificial intelligence to stop zero-day threats in real time.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 7 | 201 contacts → | ||||
Exact match “Zix, an OpenText company, is a leader in email security and helps organizations overcome their greatest digital transformation challenges by providing a secure, modern workplace.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 8 | 195 contacts → | ||||
Exact match “Grandstream has been connecting the world since 2002 with unified communications and networking solutions that make communicating more impactful than ever before.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 9 | 184 contacts → | ||||
Exact match “RPost® is a global leader in eSignature and cybersecurity solutions, helping organisations secure their communications and digital transactions.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 10 | 182 contacts → | ||||
Exact match “Synacor is a cloud-based software and services company headquartered in Buffalo, New York with offices across the globe.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 11 | 145 contacts → | ||||
Exact match “Mattermost is the leading collaboration platform for mission-critical work.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 12 | 127 contacts → | ||||
Exact match “EasyDMARC is your one-stop platform that secures your email domain infrastructure and boosts email deliverability for your peace of mind.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 13 | 116 contacts → | ||||
Exact match “AppRiver, an OpenText company, company, is a channel-first provider of cloud-enabled security and productivity services, with a 4,500-strong reseller community that protects…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 14 | 106 contacts → | ||||
Exact match “Theta Lake’s multi-award winning product suite provides patented compliance and security for modern collaboration platforms, enabling limitless integrations to unify the capture…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 15 | 106 contacts → | ||||
Exact match “Valimail, now a DigiCert company, is the industry leader in redefining email authentication for the zero-trust era.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 16 | 101 contacts → | ||||
Exact match “We pride ourselves on working with each of our clients to find a communication solution that works best for each of them.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 17 | 94 contacts → | ||||
Exact match “Making the internet a safer place for all.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 18 | 82 contacts → | ||||
Exact match “Threatcop, a leading security awareness company, is a pioneer in People Security Management that offers leading AI-powered technology focused on social engineering and email-based…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 19 | 81 contacts → | ||||
Exact match “Established more than 20 years ago, NetFortris has grown to become the leading provider of secure cloud communication solutions to forward-thinking, mid-sized and enterprise…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 20 | 80 contacts → | ||||
Exact match “Material Security is an automated detection and response toolkit for Google Workspace and Microsoft 365, combining email security, data security, identity protection, and…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 21 | 80 contacts → | ||||
Exact match “Trust at Scale.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 22 | 79 contacts → | ||||
Exact match “PreVeil makes encryption usable for CMMC & ITAR compliance, business and personal use.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 23 | 70 contacts → | ||||
Exact match “XMedius is a global leader in the field of enterprise communications solutions.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 24 | 62 contacts → | ||||
Exact match “From around the corner, to around the globe, COA Network delivers the tools and technology that makes building and managing your business easier.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
| 25 | 59 contacts → | ||||
Exact match “Paubox is a leader in HIPAA compliant email security for healthcare.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “email, messaging, and collaboration security solutions providers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 395 email, messaging, and collaboration security solutions providers based in the United States
See the full list, filter by size, metro and specialty, and access 13,028 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Email, messaging, and collaboration security solutions providers based in the United States at a glance
As of Oct 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 395 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “email, messaging, and collaboration security solutions providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 13,028 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 19, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “email, messaging, and collaboration security solutions providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many email, messaging, and collaboration security solutions providers are there based in the United States?
RevenueBase identified 395 company matches for email, messaging, and collaboration security solutions providers associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Fortinet tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most email, messaging, and collaboration security solutions providers?
New York leads with 18 company records, followed by San Francisco (14) and Miami (12).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 13,028 professional contacts with verified work emails tracked across these 395 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 395 email, messaging, and collaboration security solutions providers based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Email, messaging, and collaboration security solutions providers by geography
- Email, messaging, and collaboration security solutions providers based in London, United Kingdom
- Email, messaging, and collaboration security solutions providers based in Australia
- Email, messaging, and collaboration security solutions providers based in Brazil
- Email, messaging, and collaboration security solutions providers based in Canada
- Email, messaging, and collaboration security solutions providers based in France
- Email, messaging, and collaboration security solutions providers based in Germany
- Email, messaging, and collaboration security solutions providers based in India
- Email, messaging, and collaboration security solutions providers based in Italy
- Email, messaging, and collaboration security solutions providers based in the Netherlands
- Email, messaging, and collaboration security solutions providers based in Spain
- Email, messaging, and collaboration security solutions providers based in Switzerland
- Email, messaging, and collaboration security solutions providers based in Türkiye
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Email, messaging, and collaboration security solutions providers based in London, United Kingdom
- Email, messaging, and collaboration security solutions providers based in Australia
- Email, messaging, and collaboration security solutions providers based in Brazil
- Email, messaging, and collaboration security solutions providers based in Canada
- Email, messaging, and collaboration security solutions providers based in France
- Email, messaging, and collaboration security solutions providers based in Germany
Company intelligence · public preview
Top 25 email, messaging, and collaboration security solutions providers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 395 matching company records for email, messaging, and collaboration security solutions providers based in the United States, with 25,533 tracked contacts and 13,028 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 email, messaging, and collaboration security solutions providers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Fortinetfortinet.comHQ: Sunnyvale, CA, United StatesReported employees: 10001+ | Sunnyvale, CA, United States | 10001+ | Exact match | 14,972 contacts → |
“Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Barracudabarracuda.comHQ: Campbell, CA, United StatesReported employees: 1,001-5,000 | Campbell, CA, United States | 1,001-5,000 | Exact match | 2,272 contacts → |
“Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Intermedia Intelligent Communicationsintermedia.comHQ: Sunnyvale, CA, United StatesReported employees: 1,001-5,000 | Sunnyvale, CA, United States | 1,001-5,000 | Exact match | 1,369 contacts → |
“Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Sublime Securitysublime.securityHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 298 contacts → |
“Sublime is the new standard for email security.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Virtruvirtru.comHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 238 contacts → |
“Virtru is a global leader in data privacy and protection.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Webrootwebroot.comHQ: Broomfield, CO, United StatesReported employees: 501-1,000 | Broomfield, CO, United States | 501-1,000 | Exact match | 210 contacts → |
“Webroot, an OpenText company, was the first to harness the cloud and artificial intelligence to stop zero-day threats in real time.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  ZIXzix.comHQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 201 contacts → |
“Zix, an OpenText company, is a leader in email security and helps organizations overcome their greatest digital transformation challenges by providing a secure, modern workplace.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Grandstream Networksgrandstream.comHQ: Boston, MA, United StatesReported employees: 201-500 | Boston, MA, United States | 201-500 | Exact match | 195 contacts → |
“Grandstream has been connecting the world since 2002 with unified communications and networking solutions that make communicating more impactful than ever before.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  RPOSTrpost.comHQ: Los Angeles, CA, United StatesReported employees: 201-500 | Los Angeles, CA, United States | 201-500 | Exact match | 184 contacts → |
“RPost® is a global leader in eSignature and cybersecurity solutions, helping organisations secure their communications and digital transactions.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Synacorsynacor.comHQ: Buffalo, NY, United StatesReported employees: 201-500 | Buffalo, NY, United States | 201-500 | Exact match | 182 contacts → |
“Synacor is a cloud-based software and services company headquartered in Buffalo, New York with offices across the globe.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Mattermostmattermost.comHQ: Palo Alto, CA, United StatesReported employees: 51-200 | Palo Alto, CA, United States | 51-200 | Exact match | 145 contacts → |
“Mattermost is the leading collaboration platform for mission-critical work.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Easydmarceasydmarc.comHQ: Dover, DE, United StatesReported employees: 51-200 | Dover, DE, United States | 51-200 | Exact match | 127 contacts → |
“EasyDMARC is your one-stop platform that secures your email domain infrastructure and boosts email deliverability for your peace of mind.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Appriverappriver.comHQ: Gulf Breeze, FL, United StatesReported employees: 201-500 | Gulf Breeze, FL, United States | 201-500 | Exact match | 116 contacts → |
“AppRiver, an OpenText company, company, is a channel-first provider of cloud-enabled security and productivity services, with a 4,500-strong reseller community that protects…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Theta Lakethetalake.comHQ: Santa Barbara, CA, United StatesReported employees: 51-200 | Santa Barbara, CA, United States | 51-200 | Exact match | 106 contacts → |
“Theta Lake’s multi-award winning product suite provides patented compliance and security for modern collaboration platforms, enabling limitless integrations to unify the capture…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Valimailvalimail.comHQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 106 contacts → |
“Valimail, now a DigiCert company, is the industry leader in redefining email authentication for the zero-trust era.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Atel Technologiesatelx.comHQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 101 contacts → |
“We pride ourselves on working with each of our clients to find a communication solution that works best for each of them.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Sendmarcsendmarc.comHQ: Wilmington, DE, United StatesReported employees: 51-200 | Wilmington, DE, United States | 51-200 | Exact match | 94 contacts → |
“Making the internet a safer place for all.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Threatcopthreatcop.comHQ: Cupertino, CA, United StatesReported employees: 51-200 | Cupertino, CA, United States | 51-200 | Exact match | 82 contacts → |
“Threatcop, a leading security awareness company, is a pioneer in People Security Management that offers leading AI-powered technology focused on social engineering and email-based…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Netfortris, A Sangoma Companynetfortris.comHQ: Plano, TX, United StatesReported employees: 201-500 | Plano, TX, United States | 201-500 | Exact match | 81 contacts → |
“Established more than 20 years ago, NetFortris has grown to become the leading provider of secure cloud communication solutions to forward-thinking, mid-sized and enterprise…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Material Securitymaterial.securityHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 80 contacts → |
“Material Security is an automated detection and response toolkit for Google Workspace and Microsoft 365, combining email security, data security, identity protection, and…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Eshareeshare.comHQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 80 contacts → |
“Trust at Scale.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Preveilpreveil.comHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 79 contacts → |
“PreVeil makes encryption usable for CMMC & ITAR compliance, business and personal use.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  AVSTxmedius.comHQ: Bothell, WA, United StatesReported employees: 51-200 | Bothell, WA, United States | 51-200 | Exact match | 70 contacts → |
“XMedius is a global leader in the field of enterprise communications solutions.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  COA Network INCcoanetwork.comHQ: Bridgewater, NJ, United StatesReported employees: 51-200 | Bridgewater, NJ, United States | 51-200 | Exact match | 62 contacts → |
“From around the corner, to around the globe, COA Network delivers the tools and technology that makes building and managing your business easier.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Pauboxpaubox.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 59 contacts → |
“Paubox is a leader in HIPAA compliant email security for healthcare.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 395 company matches
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Email, messaging, and collaboration security solutions providers: dataset insights
October 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
395 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 395 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for email, messaging, and collaboration security solutions providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many email, messaging, and collaboration security solutions providers did RevenueBase find based in the United States?
The saved snapshot records 395 matching company records, 25,533 tracked contacts and 13,028 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Email, messaging, and collaboration security solutions providers by geography
- Email, messaging, and collaboration security solutions providers based in London, United Kingdom
- Email, messaging, and collaboration security solutions providers based in Australia
- Email, messaging, and collaboration security solutions providers based in Brazil
- Email, messaging, and collaboration security solutions providers based in Canada
- Email, messaging, and collaboration security solutions providers based in France
- Email, messaging, and collaboration security solutions providers based in Germany
- Email, messaging, and collaboration security solutions providers based in India
- Email, messaging, and collaboration security solutions providers based in Italy
- Email, messaging, and collaboration security solutions providers based in the Netherlands
- Email, messaging, and collaboration security solutions providers based in Spain
- Email, messaging, and collaboration security solutions providers based in Switzerland
- Email, messaging, and collaboration security solutions providers based in Türkiye
Cite this list
RevenueBase Data Team. Top 25 email, messaging, and collaboration security solutions providers based in the United States. Snapshot: October 19, 2026. https://revenuebase.ai/companies/email-messaging-and-collaboration-security-solutions-providers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Email, messaging, and collaboration security solutions providers based in London, United Kingdom
- Email, messaging, and collaboration security solutions providers based in Australia
- Email, messaging, and collaboration security solutions providers based in Brazil
- Email, messaging, and collaboration security solutions providers based in Canada
- Email, messaging, and collaboration security solutions providers based in France
- Email, messaging, and collaboration security solutions providers based in Germany
Company intelligence · public preview
Top 25 email, messaging, and collaboration security solutions providers based in the United States
RevenueBase records 395 matching company records for email, messaging, and collaboration security solutions providers based in the United States, with 25,533 tracked contacts and 13,028 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 email, messaging, and collaboration security solutions providers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Fortinetfortinet.com HQ: Sunnyvale, CA, United StatesReported employees: 10001+ | Sunnyvale, CA, United States | 10001+ | Exact match | 14,972 contacts → |
“Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Barracudabarracuda.com HQ: Campbell, CA, United StatesReported employees: 1,001-5,000 | Campbell, CA, United States | 1,001-5,000 | Exact match | 2,272 contacts → |
“Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Intermedia Intelligent Communicationsintermedia.com HQ: Sunnyvale, CA, United StatesReported employees: 1,001-5,000 | Sunnyvale, CA, United States | 1,001-5,000 | Exact match | 1,369 contacts → |
“Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Sublime Securitysublime.security HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 298 contacts → |
“Sublime is the new standard for email security.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Virtruvirtru.com HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 238 contacts → |
“Virtru is a global leader in data privacy and protection.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Webrootwebroot.com HQ: Broomfield, CO, United StatesReported employees: 501-1,000 | Broomfield, CO, United States | 501-1,000 | Exact match | 210 contacts → |
“Webroot, an OpenText company, was the first to harness the cloud and artificial intelligence to stop zero-day threats in real time.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | ZIXzix.com HQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 201 contacts → |
“Zix, an OpenText company, is a leader in email security and helps organizations overcome their greatest digital transformation challenges by providing a secure, modern workplace.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Grandstream Networksgrandstream.com HQ: Boston, MA, United StatesReported employees: 201-500 | Boston, MA, United States | 201-500 | Exact match | 195 contacts → |
“Grandstream has been connecting the world since 2002 with unified communications and networking solutions that make communicating more impactful than ever before.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | RPOSTrpost.com HQ: Los Angeles, CA, United StatesReported employees: 201-500 | Los Angeles, CA, United States | 201-500 | Exact match | 184 contacts → |
“RPost® is a global leader in eSignature and cybersecurity solutions, helping organisations secure their communications and digital transactions.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Synacorsynacor.com HQ: Buffalo, NY, United StatesReported employees: 201-500 | Buffalo, NY, United States | 201-500 | Exact match | 182 contacts → |
“Synacor is a cloud-based software and services company headquartered in Buffalo, New York with offices across the globe.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Mattermostmattermost.com HQ: Palo Alto, CA, United StatesReported employees: 51-200 | Palo Alto, CA, United States | 51-200 | Exact match | 145 contacts → |
“Mattermost is the leading collaboration platform for mission-critical work.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Easydmarceasydmarc.com HQ: Dover, DE, United StatesReported employees: 51-200 | Dover, DE, United States | 51-200 | Exact match | 127 contacts → |
“EasyDMARC is your one-stop platform that secures your email domain infrastructure and boosts email deliverability for your peace of mind.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Appriverappriver.com HQ: Gulf Breeze, FL, United StatesReported employees: 201-500 | Gulf Breeze, FL, United States | 201-500 | Exact match | 116 contacts → |
“AppRiver, an OpenText company, company, is a channel-first provider of cloud-enabled security and productivity services, with a 4,500-strong reseller community that protects…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Theta Lakethetalake.com HQ: Santa Barbara, CA, United StatesReported employees: 51-200 | Santa Barbara, CA, United States | 51-200 | Exact match | 106 contacts → |
“Theta Lake’s multi-award winning product suite provides patented compliance and security for modern collaboration platforms, enabling limitless integrations to unify the capture…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Valimailvalimail.com HQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 106 contacts → |
“Valimail, now a DigiCert company, is the industry leader in redefining email authentication for the zero-trust era.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Atel Technologiesatelx.com HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 101 contacts → |
“We pride ourselves on working with each of our clients to find a communication solution that works best for each of them.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Sendmarcsendmarc.com HQ: Wilmington, DE, United StatesReported employees: 51-200 | Wilmington, DE, United States | 51-200 | Exact match | 94 contacts → |
“Making the internet a safer place for all.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Threatcopthreatcop.com HQ: Cupertino, CA, United StatesReported employees: 51-200 | Cupertino, CA, United States | 51-200 | Exact match | 82 contacts → |
“Threatcop, a leading security awareness company, is a pioneer in People Security Management that offers leading AI-powered technology focused on social engineering and email-based…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Netfortris, A Sangoma Companynetfortris.com HQ: Plano, TX, United StatesReported employees: 201-500 | Plano, TX, United States | 201-500 | Exact match | 81 contacts → |
“Established more than 20 years ago, NetFortris has grown to become the leading provider of secure cloud communication solutions to forward-thinking, mid-sized and enterprise…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Material Securitymaterial.security HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 80 contacts → |
“Material Security is an automated detection and response toolkit for Google Workspace and Microsoft 365, combining email security, data security, identity protection, and…” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Eshareeshare.com HQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 80 contacts → |
“Trust at Scale.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Preveilpreveil.com HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 79 contacts → |
“PreVeil makes encryption usable for CMMC & ITAR compliance, business and personal use.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | AVSTxmedius.com HQ: Bothell, WA, United StatesReported employees: 51-200 | Bothell, WA, United States | 51-200 | Exact match | 70 contacts → |
“XMedius is a global leader in the field of enterprise communications solutions.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | COA Network INCcoanetwork.com HQ: Bridgewater, NJ, United StatesReported employees: 51-200 | Bridgewater, NJ, United States | 51-200 | Exact match | 62 contacts → |
“From around the corner, to around the globe, COA Network delivers the tools and technology that makes building and managing your business easier.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Pauboxpaubox.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 59 contacts → |
“Paubox is a leader in HIPAA compliant email security for healthcare.” Recorded description excerpt · October 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 395 company matches
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Email, messaging, and collaboration security solutions providers: dataset insights
October 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
395 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 395 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for email, messaging, and collaboration security solutions providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many email, messaging, and collaboration security solutions providers did RevenueBase find based in the United States?
The saved snapshot records 395 matching company records, 25,533 tracked contacts and 13,028 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Email, messaging, and collaboration security solutions providers by geography
- Email, messaging, and collaboration security solutions providers based in London, United Kingdom
- Email, messaging, and collaboration security solutions providers based in Australia
- Email, messaging, and collaboration security solutions providers based in Brazil
- Email, messaging, and collaboration security solutions providers based in Canada
- Email, messaging, and collaboration security solutions providers based in France
- Email, messaging, and collaboration security solutions providers based in Germany
- Email, messaging, and collaboration security solutions providers based in India
- Email, messaging, and collaboration security solutions providers based in Italy
- Email, messaging, and collaboration security solutions providers based in the Netherlands
- Email, messaging, and collaboration security solutions providers based in Spain
- Email, messaging, and collaboration security solutions providers based in Switzerland
- Email, messaging, and collaboration security solutions providers based in Türkiye
Cite this list
RevenueBase Data Team. Top 25 email, messaging, and collaboration security solutions providers based in the United States. Snapshot: October 19, 2026. https://revenuebase.ai/companies/email-messaging-and-collaboration-security-solutions-providers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Email, messaging, and collaboration security solutions providers based in London, United Kingdom
- Email, messaging, and collaboration security solutions providers based in Australia
- Email, messaging, and collaboration security solutions providers based in Brazil
- Email, messaging, and collaboration security solutions providers based in Canada
- Email, messaging, and collaboration security solutions providers based in France
- Email, messaging, and collaboration security solutions providers based in Germany