Company lists · Data refreshed October 2026
Top 25 Email routing software companies based in the United States
RevenueBase identified 108 company matches for email routing software companies associated with the United States as of October 2026 and tracks 1,227 professional contacts across them, including 238 with verified work emails. New York is the largest hub.
This list covers company matches for email routing software companies 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 20, 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 routing software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 144 contacts → | ||||
Exact match “We believe powerful connections propel business growth.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 2 | 131 contacts → | ||||
Exact match “Who are we?” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 3 | 90 contacts → | ||||
Exact match “For over 20 years, AWeber has helped entrepreneurs and small business owners connect with their prospects and customers through powerfully-simple email marketing solutions.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 4 | 36 contacts → | ||||
Exact match “Message Systems is the world’s #1 email infrastructure provider.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 5 | 25 contacts → | ||||
Exact match “OPTIZMO Technologies is an innovative software company that provides robust, enterprise class solutions in the Fortune 500 arena.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 6 | 24 contacts → | ||||
Exact match “GlockApps Software is a privately held company that offers multiple email marketing solutions to help businesses reach the inbox and solve email deliverability issues.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 7 | 21 contacts → | ||||
Exact match “Founded in 2003, Sendio is a venture-backed, privately held company whose products protect the email environments of enterprises and institutions from attacks and abuse, and…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 8 | 18 contacts → | ||||
Exact match “Email marketing is a powerful channel for small businesses to generate leads.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 9 | 18 contacts → | ||||
Exact match “Red Condor is revolutionizing spam fighting technology.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 10 | 14 contacts → | ||||
Exact match “Smarter, high-volume email delivery software for tech leaders & marketers.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 11 | 11 contacts → | ||||
Exact match “As spam filters tighten, 52% of business emails go unseen, crippling sales and collections for B2B companies.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 12 | 11 contacts → | ||||
Exact match “Email marketing software for media, publishing, and brand engagement.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 13 | 10 contacts → | ||||
Exact match “Potions provides enterprise-grade email marketing for the little guy” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 14 | 10 contacts → | ||||
Exact match “Senders is focused on email infrastructure, email scaling, email deliverability, and email sendability.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 15 | 8 contacts → | ||||
Exact match “At SendX, we’re passionate about making email marketing simple, affordable, and highly effective.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 16 | 8 contacts → | ||||
Exact match “Inbox Group, LLC is an Email Marketing Agency whose mission is to help companies large and small: Communicate their message Nurture and manage client relationships Drive customer…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 17 | 7 contacts → | ||||
Exact match “IndustryNewsletters is a leading provider of email marketing tools delivering proven solutions that help professional service providers build new business.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 18 | 6 contacts → | ||||
Exact match “Our specialization: Ensure reliable and efficient delivery of emails.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “Since 2001, EmailOpen™ has been a leader in innovative electronic mail solutions, delivering proven and measurable results to the internal communication and direct marketing…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match “Today, with attention spans decreasing and platforms for communication increasing, the biggest challenge that most brands face is to ‘get through’ to their target audience.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “Following are some of the features MassMailer provides for Salesforce CRM customers.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “Egressif provides managed email deliverability services businesses.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 23 | 2 contacts → | ||||
Exact match “Gotta lotta data you wanna mail to?” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “Campaign Refinery is an innovative email marketing solution that focuses on keeping your list quality high, your sender score top-notch and sophisticated automation rules to help…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “With over 30 years of combined industry experienced, we have helped businesses mitigate issues, improve deliverability, rebuild, repair, and maintain their reputation.” Recorded in the RevenueBase company graph · Oct 20, 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 routing software companies”. 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 108 email routing software companies based in the United States
See the full list, filter by size, metro and specialty, and access 238 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Email routing software companies based in the United States at a glance
As of Oct 20, 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 108 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 routing software companies” 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 238 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 20, 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 routing software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many email routing software companies are there based in the United States?
RevenueBase identified 108 company matches for email routing software companies 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?
Icontact tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most email routing software companies?
New York leads with 10 company records, followed by Austin (5) and Los Angeles (4).
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 238 professional contacts with verified work emails tracked across these 108 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 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 108 email routing software companies based in the United States. Start with a free account, no credit card.
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Email routing software companies by geography
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 routing software companies based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 email routing software companies 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 108 matching company records for email routing software companies based in the United States, with 1,227 tracked contacts and 238 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 20, 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 routing software companies 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 |  Icontacticontact.comHQ: Morrisville, NC, United StatesReported employees: 51-200 | Morrisville, NC, United States | 51-200 | Exact match | 144 contacts → |
“We believe powerful connections propel business growth.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  BCC Softwarebccsoftware.comHQ: Rochester, NY, United StatesReported employees: 51-200 | Rochester, NY, United States | 51-200 | Exact match | 131 contacts → |
“Who are we?” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Aweberaweber.comHQ: Doylestown, PA, United StatesReported employees: 51-200 | Doylestown, PA, United States | 51-200 | Exact match | 90 contacts → |
“For over 20 years, AWeber has helped entrepreneurs and small business owners connect with their prospects and customers through powerfully-simple email marketing solutions.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Message Systemsmessagesystems.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 36 contacts → |
“Message Systems is the world’s #1 email infrastructure provider.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Optizmo Technologies, LLCoptizmo.comHQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 25 contacts → |
“OPTIZMO Technologies is an innovative software company that provides robust, enterprise class solutions in the Fortune 500 arena.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Glockappsglockapps.comHQ: Pinedale, WY, United StatesReported employees: 11-50 | Pinedale, WY, United States | 11-50 | Exact match | 24 contacts → |
“GlockApps Software is a privately held company that offers multiple email marketing solutions to help businesses reach the inbox and solve email deliverability issues.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Sendio Technologies, INCsendio.comHQ: Newport Beach, CA, United StatesReported employees: 11-50 | Newport Beach, CA, United States | 11-50 | Exact match | 21 contacts → |
“Founded in 2003, Sendio is a venture-backed, privately held company whose products protect the email environments of enterprises and institutions from attacks and abuse, and…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Xgrowth LLCxgrowthtech.comHQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 18 contacts → |
“Email marketing is a powerful channel for small businesses to generate leads.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | RED Condorredcondor.com HQ: Rohnert Park, CA, United StatesReported employees: 11-50 | Rohnert Park, CA, United States | 11-50 | Exact match | 18 contacts → |
“Red Condor is revolutionizing spam fighting technology.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Greenarrow Emailgreenarrowemail.comHQ: Schneider, IN, United StatesReported employees: 11-50 | Schneider, IN, United States | 11-50 | Exact match | 14 contacts → |
“Smarter, high-volume email delivery software for tech leaders & marketers.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Mission Inboxmissioninbox.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 11 contacts → |
“As spam filters tighten, 52% of business emails go unseen, crippling sales and collections for B2B companies.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Postuppostup.comHQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 11 contacts → |
“Email marketing software for media, publishing, and brand engagement.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Potionswithpotions.comHQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 10 contacts → |
“Potions provides enterprise-grade email marketing for the little guy” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Senderssenders.coHQ: Brooklyn, NY, United StatesReported employees: 11-50 | Brooklyn, NY, United States | 11-50 | Exact match | 10 contacts → |
“Senders is focused on email infrastructure, email scaling, email deliverability, and email sendability.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  SENDXsendx.ioHQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 8 contacts → |
“At SendX, we’re passionate about making email marketing simple, affordable, and highly effective.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Inbox Group Email Marketinginboxgroup.comHQ: Grapevine, TX, United StatesReported employees: 11-50 | Grapevine, TX, United States | 11-50 | Exact match | 8 contacts → |
“Inbox Group, LLC is an Email Marketing Agency whose mission is to help companies large and small: Communicate their message Nurture and manage client relationships Drive customer…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Industrynewslettersindustrynewsletters.comHQ: Green Cove Springs, FL, United StatesReported employees: 11-50 | Green Cove Springs, FL, United States | 11-50 | Exact match | 7 contacts → |
“IndustryNewsletters is a leading provider of email marketing tools delivering proven solutions that help professional service providers build new business.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Xpand Outreachxpandoutreach.comHQ: Denver, CO, United StatesReported employees: 1-10 | Denver, CO, United States | 1-10 | Exact match | 6 contacts → |
“Our specialization: Ensure reliable and efficient delivery of emails.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Emailopenemailopen.comHQ: Malibu, CA, United StatesReported employees: 11-50 | Malibu, CA, United States | 11-50 | Exact match | 5 contacts → |
“Since 2001, EmailOpen™ has been a leader in innovative electronic mail solutions, delivering proven and measurable results to the internal communication and direct marketing…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Gethrough INCgethrough.comHQ: Plano, TX, United StatesReported employees: 51-200 | Plano, TX, United States | 51-200 | Exact match | 5 contacts → |
“Today, with attention spans decreasing and platforms for communication increasing, the biggest challenge that most brands face is to ‘get through’ to their target audience.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Massmailer, INCmassmailer.ioHQ: Dover, DE, United StatesReported employees: 11-50 | Dover, DE, United States | 11-50 | Exact match | 4 contacts → |
“Following are some of the features MassMailer provides for Salesforce CRM customers.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Egressifegressif.ioHQ: Sheridan, WY, United StatesReported employees: 1-10 | Sheridan, WY, United States | 1-10 | Exact match | 4 contacts → |
“Egressif provides managed email deliverability services businesses.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Volompvolomp.comHQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 2 contacts → |
“Gotta lotta data you wanna mail to?” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Campaign Refinerycampaignrefinery.comHQ: Edmonds, WA, United StatesReported employees: 1-10 | Edmonds, WA, United States | 1-10 | Exact match | 2 contacts → |
“Campaign Refinery is an innovative email marketing solution that focuses on keeping your list quality high, your sender score top-notch and sophisticated automation rules to help…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Start Inboxingstartinboxing.comHQ: Orlando, FL, United StatesReported employees: 1-10 | Orlando, FL, United States | 1-10 | Exact match | 2 contacts → |
“With over 30 years of combined industry experienced, we have helped businesses mitigate issues, improve deliverability, rebuild, repair, and maintain their reputation.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 108 company matches
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Email routing software companies: dataset insights
October 20, 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
107 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 108 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 20, 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 routing software companies?
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 routing software companies did RevenueBase find based in the United States?
The saved snapshot records 108 matching company records, 1,227 tracked contacts and 238 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 20, 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 routing software companies by geography
Cite this list
RevenueBase Data Team. Top 25 email routing software companies based in the United States. Snapshot: October 20, 2026. https://revenuebase.ai/companies/email-routing-software-companies/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 routing software companies based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 email routing software companies based in the United States
RevenueBase records 108 matching company records for email routing software companies based in the United States, with 1,227 tracked contacts and 238 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 20, 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 routing software companies 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 | Icontacticontact.com HQ: Morrisville, NC, United StatesReported employees: 51-200 | Morrisville, NC, United States | 51-200 | Exact match | 144 contacts → |
“We believe powerful connections propel business growth.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | BCC Softwarebccsoftware.com HQ: Rochester, NY, United StatesReported employees: 51-200 | Rochester, NY, United States | 51-200 | Exact match | 131 contacts → |
“Who are we?” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Aweberaweber.com HQ: Doylestown, PA, United StatesReported employees: 51-200 | Doylestown, PA, United States | 51-200 | Exact match | 90 contacts → |
“For over 20 years, AWeber has helped entrepreneurs and small business owners connect with their prospects and customers through powerfully-simple email marketing solutions.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Message Systemsmessagesystems.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 36 contacts → |
“Message Systems is the world’s #1 email infrastructure provider.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Optizmo Technologies, LLCoptizmo.com HQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 25 contacts → |
“OPTIZMO Technologies is an innovative software company that provides robust, enterprise class solutions in the Fortune 500 arena.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Glockappsglockapps.com HQ: Pinedale, WY, United StatesReported employees: 11-50 | Pinedale, WY, United States | 11-50 | Exact match | 24 contacts → |
“GlockApps Software is a privately held company that offers multiple email marketing solutions to help businesses reach the inbox and solve email deliverability issues.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Sendio Technologies, INCsendio.com HQ: Newport Beach, CA, United StatesReported employees: 11-50 | Newport Beach, CA, United States | 11-50 | Exact match | 21 contacts → |
“Founded in 2003, Sendio is a venture-backed, privately held company whose products protect the email environments of enterprises and institutions from attacks and abuse, and…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Xgrowth LLCxgrowthtech.com HQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 18 contacts → |
“Email marketing is a powerful channel for small businesses to generate leads.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | RED Condorredcondor.com HQ: Rohnert Park, CA, United StatesReported employees: 11-50 | Rohnert Park, CA, United States | 11-50 | Exact match | 18 contacts → |
“Red Condor is revolutionizing spam fighting technology.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Greenarrow Emailgreenarrowemail.com HQ: Schneider, IN, United StatesReported employees: 11-50 | Schneider, IN, United States | 11-50 | Exact match | 14 contacts → |
“Smarter, high-volume email delivery software for tech leaders & marketers.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Mission Inboxmissioninbox.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 11 contacts → |
“As spam filters tighten, 52% of business emails go unseen, crippling sales and collections for B2B companies.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Postuppostup.com HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 11 contacts → |
“Email marketing software for media, publishing, and brand engagement.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Potionswithpotions.com HQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 10 contacts → |
“Potions provides enterprise-grade email marketing for the little guy” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Senderssenders.co HQ: Brooklyn, NY, United StatesReported employees: 11-50 | Brooklyn, NY, United States | 11-50 | Exact match | 10 contacts → |
“Senders is focused on email infrastructure, email scaling, email deliverability, and email sendability.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | SENDXsendx.io HQ: Wilmington, DE, United StatesReported employees: 11-50 | Wilmington, DE, United States | 11-50 | Exact match | 8 contacts → |
“At SendX, we’re passionate about making email marketing simple, affordable, and highly effective.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Inbox Group Email Marketinginboxgroup.com HQ: Grapevine, TX, United StatesReported employees: 11-50 | Grapevine, TX, United States | 11-50 | Exact match | 8 contacts → |
“Inbox Group, LLC is an Email Marketing Agency whose mission is to help companies large and small: Communicate their message Nurture and manage client relationships Drive customer…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Industrynewslettersindustrynewsletters.com HQ: Green Cove Springs, FL, United StatesReported employees: 11-50 | Green Cove Springs, FL, United States | 11-50 | Exact match | 7 contacts → |
“IndustryNewsletters is a leading provider of email marketing tools delivering proven solutions that help professional service providers build new business.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Xpand Outreachxpandoutreach.com HQ: Denver, CO, United StatesReported employees: 1-10 | Denver, CO, United States | 1-10 | Exact match | 6 contacts → |
“Our specialization: Ensure reliable and efficient delivery of emails.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Emailopenemailopen.com HQ: Malibu, CA, United StatesReported employees: 11-50 | Malibu, CA, United States | 11-50 | Exact match | 5 contacts → |
“Since 2001, EmailOpen™ has been a leader in innovative electronic mail solutions, delivering proven and measurable results to the internal communication and direct marketing…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Gethrough INCgethrough.com HQ: Plano, TX, United StatesReported employees: 51-200 | Plano, TX, United States | 51-200 | Exact match | 5 contacts → |
“Today, with attention spans decreasing and platforms for communication increasing, the biggest challenge that most brands face is to ‘get through’ to their target audience.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Massmailer, INCmassmailer.io HQ: Dover, DE, United StatesReported employees: 11-50 | Dover, DE, United States | 11-50 | Exact match | 4 contacts → |
“Following are some of the features MassMailer provides for Salesforce CRM customers.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Egressifegressif.io HQ: Sheridan, WY, United StatesReported employees: 1-10 | Sheridan, WY, United States | 1-10 | Exact match | 4 contacts → |
“Egressif provides managed email deliverability services businesses.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Volompvolomp.com HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 2 contacts → |
“Gotta lotta data you wanna mail to?” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Campaign Refinerycampaignrefinery.com HQ: Edmonds, WA, United StatesReported employees: 1-10 | Edmonds, WA, United States | 1-10 | Exact match | 2 contacts → |
“Campaign Refinery is an innovative email marketing solution that focuses on keeping your list quality high, your sender score top-notch and sophisticated automation rules to help…” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Start Inboxingstartinboxing.com HQ: Orlando, FL, United StatesReported employees: 1-10 | Orlando, FL, United States | 1-10 | Exact match | 2 contacts → |
“With over 30 years of combined industry experienced, we have helped businesses mitigate issues, improve deliverability, rebuild, repair, and maintain their reputation.” Recorded description excerpt · October 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 108 company matches
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Email routing software companies: dataset insights
October 20, 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
107 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 108 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 20, 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 routing software companies?
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 routing software companies did RevenueBase find based in the United States?
The saved snapshot records 108 matching company records, 1,227 tracked contacts and 238 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 20, 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 routing software companies by geography
Cite this list
RevenueBase Data Team. Top 25 email routing software companies based in the United States. Snapshot: October 20, 2026. https://revenuebase.ai/companies/email-routing-software-companies/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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