Company lists · Data refreshed September 2026
Top 25 Email and collaboration platforms based in the United States
RevenueBase identified 359 company matches for email and collaboration platforms associated with the United States as of September 2026 and tracks 15,693 professional contacts across them, including 3,934 with verified work emails. San Francisco is the largest hub.
This list covers company matches for email and collaboration platforms 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 September 28, 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 and collaboration platforms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,428 contacts → | ||||
Exact match “Dropbox is the one place to keep life organized and keep work moving.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 2,619 contacts → | ||||
Exact match “Slack is on a mission to make people's working lives simpler, more pleasant and more productive.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 1,254 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 1,103 contacts → | ||||
Exact match “There is a better way to work.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 1,082 contacts → | ||||
Exact match “iManage is the company dedicated to Making Knowledge Work.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 827 contacts → | ||||
Exact match “Café helps enterprises drive collaboration, engagement, and cohesion through real-world interactions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 198 contacts → | ||||
Exact match “Your all-in-one workspace for growth.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 181 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 · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 168 contacts → | ||||
Exact match “InVision is the visual collaboration platform powering the world’s smartest companies.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 164 contacts → | ||||
Exact match “Jive is the leading provider of modern communication and collaboration solutions for business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 152 contacts → | ||||
Exact match “Mattermost is the leading collaboration platform for mission-critical work.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 130 contacts → | ||||
Exact match “Coda is now Superhuman Docs!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 104 contacts → | ||||
Exact match “Hundreds of thousands of developers around the world use Nylas to increase velocity and seamlessly build customizable email and scheduling capabilities through state-of-the-art…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 103 contacts → | ||||
Exact match “Fuze is a global cloud communications and collaboration software platform for the enterprise that was acquired by 8x8.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 93 contacts → | ||||
Exact match “Nifty helps teams' simplify their workflow by consolidating team communication, project management, and client collaboration into one easy, fun, and efficient tool.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 92 contacts → | ||||
Exact match “Lotus Development Worldwide” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 88 contacts → | ||||
Exact match “Since the dawn of the Web, BroadVision has been a global leader in providing organizations with the rules, tools and infrastructure for doing business on the Web.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 77 contacts → | ||||
Exact match “We help teams move faster.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 75 contacts → | ||||
Exact match “Hightail is designed to address the unique creative collaboration challenges faced by marketing professionals and the creative teams they work with.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 72 contacts → | ||||
Exact match “Mio is a secure middleware that unlocks cross-platform messaging, file sharing, and meeting initiation for enterprise organizations that use Google Workspace and Microsoft 365…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 62 contacts → | ||||
Exact match “Swit is every team's work hub that consolidates collaboration essentials in one place - task, chat, goals, approvals, and integrations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 22 | 51 contacts → | ||||
Exact match “Business Email Accounts, Calendaring, Contacts and Collaboration Services for Your Business from BlueTie.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 48 contacts → | ||||
Exact match “Axero provides easy-to-use intranet software that boosts productivity, unifies your people, and helps your company thrive.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 48 contacts → | ||||
Exact match “Pumble is a free team alternative to Slack and Microsoft Teams.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 37 contacts → | ||||
Exact match “At POA Solutions, we offer Collaboration, Security Solutions & Amazon business/training services.” Recorded in the RevenueBase company graph · Sep 28, 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 and collaboration platforms”. 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 359 email and collaboration platforms based in the United States
See the full list, filter by size, metro and specialty, and access 3,934 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Email and collaboration platforms based in the United States at a glance
As of Sep 28, 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 359 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 and collaboration platforms” 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 3,934 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 September 28, 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.
Email and collaboration platforms by metro
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 and collaboration platforms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many email and collaboration platforms are there based in the United States?
RevenueBase identified 359 company matches for email and collaboration platforms associated with the United States as of September 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?
Dropbox tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most email and collaboration platforms?
San Francisco leads with 46 company records, followed by New York (25) and Austin (11).
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 3,934 professional contacts with verified work emails tracked across these 359 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 September 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 359 email and collaboration platforms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Email and collaboration platforms by geography
- Email and collaboration platforms based in London, United Kingdom
- Email and collaboration platforms based in San Francisco, United States
- Email and collaboration platforms based in Australia
- Email and collaboration platforms based in Brazil
- Email and collaboration platforms based in Canada
- Email and collaboration platforms based in France
- Email and collaboration platforms based in Germany
- Email and collaboration platforms based in India
- Email and collaboration platforms based in the Netherlands
- Email and collaboration platforms based in the United Kingdom
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 and collaboration platforms based in London, United Kingdom
- Email and collaboration platforms based in San Francisco, United States
- Email and collaboration platforms based in Australia
- Email and collaboration platforms based in Brazil
- Email and collaboration platforms based in Canada
- Email and collaboration platforms based in France
Company intelligence · public preview
Top 25 email and collaboration platforms 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 359 matching company records for email and collaboration platforms based in the United States, with 15,693 tracked contacts and 3,934 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: September 28, 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 and collaboration platforms 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 |  Dropboxdropbox.comHQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 3,428 contacts → |
“Dropbox is the one place to keep life organized and keep work moving.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  SLACKslack.comHQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 2,619 contacts → |
“Slack is on a mission to make people's working lives simpler, more pleasant and more productive.” Recorded description excerpt · September 28, 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 | 1,254 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Anywhereworksanywhereworks.comHQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 1,103 contacts → |
“There is a better way to work.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Imanageimanage.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,082 contacts → |
“iManage is the company dedicated to Making Knowledge Work.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Café YC S21at.cafeHQ: NY, United StatesReported employees: Not recorded | NY, United States | Not recorded | Exact match | 827 contacts → |
“Café helps enterprises drive collaboration, engagement, and cohesion through real-world interactions.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Bitrix24bitrix24.comHQ: Alexandria, VA, United StatesReported employees: 501-1,000 | Alexandria, VA, United States | 501-1,000 | Exact match | 198 contacts → |
“Your all-in-one workspace for growth.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Synacorsynacor.comHQ: Buffalo, NY, United StatesReported employees: 201-500 | Buffalo, NY, United States | 201-500 | Exact match | 181 contacts → |
“Synacor is a cloud-based software and services company headquartered in Buffalo, New York with offices across the globe.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Invisioninvisionapp.comHQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 168 contacts → |
“InVision is the visual collaboration platform powering the world’s smartest companies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Jive Softwarejivesoftware.comHQ: Austin, TX, United StatesReported employees: 501-1,000 | Austin, TX, United States | 501-1,000 | Exact match | 164 contacts → |
“Jive is the leading provider of modern communication and collaboration solutions for business.” Recorded description excerpt · September 28, 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 | 152 contacts → |
“Mattermost is the leading collaboration platform for mission-critical work.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  CODAcoda.ioHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 130 contacts → |
“Coda is now Superhuman Docs!” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  NYLASnylas.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 104 contacts → |
“Hundreds of thousands of developers around the world use Nylas to increase velocity and seamlessly build customizable email and scheduling capabilities through state-of-the-art…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Fuze An 8x8 Company8x8.comHQ: Boston, MA, United StatesReported employees: 501-1,000 | Boston, MA, United States | 501-1,000 | Exact match | 103 contacts → |
“Fuze is a global cloud communications and collaboration software platform for the enterprise that was acquired by 8x8.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  NIFTYniftypm.comHQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 93 contacts → |
“Nifty helps teams' simplify their workflow by consolidating team communication, project management, and client collaboration into one easy, fun, and efficient tool.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Lotus Developmentlotus.comHQ: Cambridge, United StatesReported employees: 1,001-5,000 | Cambridge, United States | 1,001-5,000 | Exact match | 92 contacts → |
“Lotus Development Worldwide” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Broadvision, INCbroadvision.comHQ: Redwood City, CA, United StatesReported employees: 201-500 | Redwood City, CA, United States | 201-500 | Exact match | 88 contacts → |
“Since the dawn of the Web, BroadVision has been a global leader in providing organizations with the rules, tools and infrastructure for doing business on the Web.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  HIVEhive.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 77 contacts → |
“We help teams move faster.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Hightailhightail.comHQ: San Mateo, CA, United StatesReported employees: Not recorded | San Mateo, CA, United States | Not recorded | Exact match | 75 contacts → |
“Hightail is designed to address the unique creative collaboration challenges faced by marketing professionals and the creative teams they work with.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  MIOm.ioHQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 72 contacts → |
“Mio is a secure middleware that unlocks cross-platform messaging, file sharing, and meeting initiation for enterprise organizations that use Google Workspace and Microsoft 365…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  SWITswit.ioHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 62 contacts → |
“Swit is every team's work hub that consolidates collaboration essentials in one place - task, chat, goals, approvals, and integrations.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Bluetie, INCbluetie.comHQ: Rochester, NY, United StatesReported employees: 11-50 | Rochester, NY, United States | 11-50 | Exact match | 51 contacts → |
“Business Email Accounts, Calendaring, Contacts and Collaboration Services for Your Business from BlueTie.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Axero Solutionsaxerosolutions.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 48 contacts → |
“Axero provides easy-to-use intranet software that boosts productivity, unifies your people, and helps your company thrive.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Pumblepumble.comHQ: Palo Alto, CA, United StatesReported employees: 51-200 | Palo Alto, CA, United States | 51-200 | Exact match | 48 contacts → |
“Pumble is a free team alternative to Slack and Microsoft Teams.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  POA Solutionsamazon.poasolutions.comHQ: Parker, CO, United StatesReported employees: 11-50 | Parker, CO, United States | 11-50 | Exact match | 37 contacts → |
“At POA Solutions, we offer Collaboration, Security Solutions & Amazon business/training services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 359 company matches
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Email and collaboration platforms: dataset insights
September 28, 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
358 records in the displayed employee bands.
1 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 359 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: September 28, 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 ↗
Email and collaboration platforms by metro
Questions about this company list
What does Exact match mean for email and collaboration platforms?
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 and collaboration platforms did RevenueBase find based in the United States?
The saved snapshot records 359 matching company records, 15,693 tracked contacts and 3,934 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: September 28, 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 and collaboration platforms by geography
- Email and collaboration platforms based in London, United Kingdom
- Email and collaboration platforms based in San Francisco, United States
- Email and collaboration platforms based in Australia
- Email and collaboration platforms based in Brazil
- Email and collaboration platforms based in Canada
- Email and collaboration platforms based in France
- Email and collaboration platforms based in Germany
- Email and collaboration platforms based in India
- Email and collaboration platforms based in the Netherlands
- Email and collaboration platforms based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 email and collaboration platforms based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/email-and-collaboration-platforms/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 and collaboration platforms based in London, United Kingdom
- Email and collaboration platforms based in San Francisco, United States
- Email and collaboration platforms based in Australia
- Email and collaboration platforms based in Brazil
- Email and collaboration platforms based in Canada
- Email and collaboration platforms based in France
Company intelligence · public preview
Top 25 email and collaboration platforms based in the United States
RevenueBase records 359 matching company records for email and collaboration platforms based in the United States, with 15,693 tracked contacts and 3,934 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: September 28, 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 and collaboration platforms 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 | Dropboxdropbox.com HQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 3,428 contacts → |
“Dropbox is the one place to keep life organized and keep work moving.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | SLACKslack.com HQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 2,619 contacts → |
“Slack is on a mission to make people's working lives simpler, more pleasant and more productive.” Recorded description excerpt · September 28, 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 | 1,254 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 · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Anywhereworksanywhereworks.com HQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 1,103 contacts → |
“There is a better way to work.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Imanageimanage.com HQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,082 contacts → |
“iManage is the company dedicated to Making Knowledge Work.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Café YC S21at.cafe HQ: NY, United StatesReported employees: Not recorded | NY, United States | Not recorded | Exact match | 827 contacts → |
“Café helps enterprises drive collaboration, engagement, and cohesion through real-world interactions.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Bitrix24bitrix24.com HQ: Alexandria, VA, United StatesReported employees: 501-1,000 | Alexandria, VA, United States | 501-1,000 | Exact match | 198 contacts → |
“Your all-in-one workspace for growth.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Synacorsynacor.com HQ: Buffalo, NY, United StatesReported employees: 201-500 | Buffalo, NY, United States | 201-500 | Exact match | 181 contacts → |
“Synacor is a cloud-based software and services company headquartered in Buffalo, New York with offices across the globe.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Invisioninvisionapp.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 168 contacts → |
“InVision is the visual collaboration platform powering the world’s smartest companies.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Jive Softwarejivesoftware.com HQ: Austin, TX, United StatesReported employees: 501-1,000 | Austin, TX, United States | 501-1,000 | Exact match | 164 contacts → |
“Jive is the leading provider of modern communication and collaboration solutions for business.” Recorded description excerpt · September 28, 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 | 152 contacts → |
“Mattermost is the leading collaboration platform for mission-critical work.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | CODAcoda.io HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 130 contacts → |
“Coda is now Superhuman Docs!” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | NYLASnylas.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 104 contacts → |
“Hundreds of thousands of developers around the world use Nylas to increase velocity and seamlessly build customizable email and scheduling capabilities through state-of-the-art…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Fuze An 8x8 Company8x8.com HQ: Boston, MA, United StatesReported employees: 501-1,000 | Boston, MA, United States | 501-1,000 | Exact match | 103 contacts → |
“Fuze is a global cloud communications and collaboration software platform for the enterprise that was acquired by 8x8.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | NIFTYniftypm.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 93 contacts → |
“Nifty helps teams' simplify their workflow by consolidating team communication, project management, and client collaboration into one easy, fun, and efficient tool.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Lotus Developmentlotus.com HQ: Cambridge, United StatesReported employees: 1,001-5,000 | Cambridge, United States | 1,001-5,000 | Exact match | 92 contacts → |
“Lotus Development Worldwide” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Broadvision, INCbroadvision.com HQ: Redwood City, CA, United StatesReported employees: 201-500 | Redwood City, CA, United States | 201-500 | Exact match | 88 contacts → |
“Since the dawn of the Web, BroadVision has been a global leader in providing organizations with the rules, tools and infrastructure for doing business on the Web.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HIVEhive.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 77 contacts → |
“We help teams move faster.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Hightailhightail.com HQ: San Mateo, CA, United StatesReported employees: Not recorded | San Mateo, CA, United States | Not recorded | Exact match | 75 contacts → |
“Hightail is designed to address the unique creative collaboration challenges faced by marketing professionals and the creative teams they work with.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | MIOm.io HQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 72 contacts → |
“Mio is a secure middleware that unlocks cross-platform messaging, file sharing, and meeting initiation for enterprise organizations that use Google Workspace and Microsoft 365…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | SWITswit.io HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 62 contacts → |
“Swit is every team's work hub that consolidates collaboration essentials in one place - task, chat, goals, approvals, and integrations.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Bluetie, INCbluetie.com HQ: Rochester, NY, United StatesReported employees: 11-50 | Rochester, NY, United States | 11-50 | Exact match | 51 contacts → |
“Business Email Accounts, Calendaring, Contacts and Collaboration Services for Your Business from BlueTie.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Axero Solutionsaxerosolutions.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 48 contacts → |
“Axero provides easy-to-use intranet software that boosts productivity, unifies your people, and helps your company thrive.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Pumblepumble.com HQ: Palo Alto, CA, United StatesReported employees: 51-200 | Palo Alto, CA, United States | 51-200 | Exact match | 48 contacts → |
“Pumble is a free team alternative to Slack and Microsoft Teams.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | POA Solutionsamazon.poasolutions.com HQ: Parker, CO, United StatesReported employees: 11-50 | Parker, CO, United States | 11-50 | Exact match | 37 contacts → |
“At POA Solutions, we offer Collaboration, Security Solutions & Amazon business/training services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 359 company matches
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Email and collaboration platforms: dataset insights
September 28, 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
358 records in the displayed employee bands.
1 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 359 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: September 28, 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 ↗
Email and collaboration platforms by metro
Questions about this company list
What does Exact match mean for email and collaboration platforms?
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 and collaboration platforms did RevenueBase find based in the United States?
The saved snapshot records 359 matching company records, 15,693 tracked contacts and 3,934 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: September 28, 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 and collaboration platforms by geography
- Email and collaboration platforms based in London, United Kingdom
- Email and collaboration platforms based in San Francisco, United States
- Email and collaboration platforms based in Australia
- Email and collaboration platforms based in Brazil
- Email and collaboration platforms based in Canada
- Email and collaboration platforms based in France
- Email and collaboration platforms based in Germany
- Email and collaboration platforms based in India
- Email and collaboration platforms based in the Netherlands
- Email and collaboration platforms based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 email and collaboration platforms based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/email-and-collaboration-platforms/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
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- Email and collaboration platforms based in London, United Kingdom
- Email and collaboration platforms based in San Francisco, United States
- Email and collaboration platforms based in Australia
- Email and collaboration platforms based in Brazil
- Email and collaboration platforms based in Canada
- Email and collaboration platforms based in France