Company lists · Data refreshed November 2026
Top 25 Smtp software companies worldwide
RevenueBase identified 133 company matches for smtp software companies worldwide as of November 2026 and tracks 869 professional contacts across them, including 284 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for smtp software companies worldwide, 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 November 5, 2026. Country and city lists for smtp software companies follow the table.
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 smtp software companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 188 contacts → | ||||
Exact match “Sinch Mailgun is the leading email delivery service for businesses around the world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 51 contacts → | ||||
Exact match “All the email marketing and delivery tools you need to communicate with your customers.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 50 contacts → | ||||
Exact match “SMTP is one of the early pioneers of cloud-based email services and is now part of Ziff Davis, Moz Group and Campaigner.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 37 contacts → | ||||
Exact match “Maildoso provides high-quality SMTP mailboxes built for cold email deliverability.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 21 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 · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 20 contacts → | ||||
Exact match “MailChannels ensures your customers' emails are always delivered.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 20 contacts → | ||||
Exact match “SMTP Provider Put Ltd was founded in 2012 by an Internet Marketing Company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 17 contacts → | ||||
Exact match “Email deliverability matters.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 17 contacts → | ||||
Exact match “SocketLabs is an email service provider with a full suite of email delivery, management, and performance analysis tools.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 15 contacts → | ||||
Exact match “Smarter, high-volume email delivery software for tech leaders & marketers.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 14 contacts → | ||||
Exact match “EmailLabs was created for those who have a system that generates e-mails.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 13 contacts → | ||||
Exact match “Reliable and Secure email hosting services for SMB and Enterprise.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 10 contacts → | ||||
Exact match “Cumulo9 provides transformational business email services for delivering transactional email documents, marketing campaigns and tracked email signatures.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 10 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 9 contacts → | ||||
Exact match “The only mailbox infrastructure where deliverability just works.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 9 contacts → | ||||
Exact match “The email delivery service that people actually like.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 8 contacts → | ||||
Exact match “Prolateral Consulting Ltd was founded in 2003 with its head office based in Luton, UK.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 7 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 · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 6 contacts → | ||||
Exact match “Postmastery is dedicated to helping senders maximise their email performance and deliverability with a range of software, tooling and consulting solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 3 contacts → | ||||
Exact match “Flowmailer is built for continuous high-performance, no matter the emails you're sending.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match “Gotta lotta data you wanna mail to?” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 2 contacts → | ||||
Exact match “We only serve those who are serious about email marketing so that our customers don't bear the cost of thousands of smaller free accounts.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “MailEnable Pty.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “WizEmail is an email marketing company formed by marketing specialists totalling decades of years experience in the direct marketing, internet and publishing sectors.” Recorded in the RevenueBase company graph · Nov 5, 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 “smtp 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 133 smtp software companies worldwide
See the full list, filter by size, metro and specialty, and access 284 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Smtp software companies worldwide at a glance
As of Nov 5, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for smtp software companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “smtp 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. 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 284 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 November 5, 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.
Smtp software companies by location
1 lists · largest firstEvery Smtp software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 “smtp software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many smtp software companies are there worldwide?
RevenueBase identified 133 company matches for smtp software companies worldwide as of November 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?
Sinch Mailgun tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most smtp software companies?
The United States leads with 35 companies. Every smtp software companies list by country and city is linked on this page.
Which city has the most smtp software companies?
London leads with 4 company records, followed by Delhi (3) and Los Angeles (2).
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 284 professional contacts with verified work emails tracked across these 133 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 November 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 133 smtp software companies worldwide. Start with a free account, no credit card.
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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
Company intelligence · public preview
Top 25 smtp software companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 133 matching company records for smtp software companies worldwide, with 869 tracked contacts and 284 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: November 5, 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 smtp software companies worldwide
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 |  Sinch Mailgunmailgun.comHQ: San Antonio, TX, United StatesReported employees: 201-500 | San Antonio, TX, United States | 201-500 | Exact match | 188 contacts → |
“Sinch Mailgun is the leading email delivery service for businesses around the world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Elastic Emailelasticemail.comHQ: Szczecin, BC, PolandReported employees: 11-50 | Szczecin, BC, Poland | 11-50 | Exact match | 51 contacts → |
“All the email marketing and delivery tools you need to communicate with your customers.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  SMTPsmtp.comHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 50 contacts → |
“SMTP is one of the early pioneers of cloud-based email services and is now part of Ziff Davis, Moz Group and Campaigner.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Maildosomaildoso.aiHQ: Granite Bay, CA, United StatesReported employees: 11-50 | Granite Bay, CA, United States | 11-50 | Exact match | 37 contacts → |
“Maildoso provides high-quality SMTP mailboxes built for cold email deliverability.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Glockappsglockapps.comHQ: Pinedale, WY, United StatesReported employees: 11-50 | Pinedale, WY, United States | 11-50 | Exact match | 21 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 · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Mailchannelsmailchannels.comHQ: Vancouver, BC, CanadaReported employees: 11-50 | Vancouver, BC, Canada | 11-50 | Exact match | 20 contacts → |
“MailChannels ensures your customers' emails are always delivered.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Smtp Provider PVT LTDsmtpprovider.comHQ: Kolkata, IndiaReported employees: 11-50 | Kolkata, India | 11-50 | Exact match | 20 contacts → |
“SMTP Provider Put Ltd was founded in 2012 by an Internet Marketing Company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Smtp2gosmtp2go.comHQ: Christchurch, New ZealandReported employees: 11-50 | Christchurch, New Zealand | 11-50 | Exact match | 17 contacts → |
“Email deliverability matters.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Socketlabssocketlabs.comHQ: Wayne, PA, United StatesReported employees: 11-50 | Wayne, PA, United States | 11-50 | Exact match | 17 contacts → |
“SocketLabs is an email service provider with a full suite of email delivery, management, and performance analysis tools.” Recorded description excerpt · November 5, 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 | 15 contacts → |
“Smarter, high-volume email delivery software for tech leaders & marketers.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Emaillabsemaillabs.ioHQ: Poznań, PolandReported employees: 11-50 | Poznań, Poland | 11-50 | Exact match | 14 contacts → |
“EmailLabs was created for those who have a system that generates e-mails.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Duocircleduocircle.comHQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 13 contacts → |
“Reliable and Secure email hosting services for SMB and Enterprise.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Cumulo9 Limitedcumulo9.comHQ: Auckland Cbd, New ZealandReported employees: 1-10 | Auckland Cbd, New Zealand | 1-10 | Exact match | 10 contacts → |
“Cumulo9 provides transformational business email services for delivering transactional email documents, marketing campaigns and tracked email signatures.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Mailerevermailerever.comHQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 10 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 |  sending.acsending.acHQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 9 contacts → |
“The only mailbox infrastructure where deliverability just works.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Postmarkpostmarkapp.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 9 contacts → |
“The email delivery service that people actually like.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Prolateral Consulting LTDprolateral.comHQ: Luton, United KingdomReported employees: 11-50 | Luton, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Prolateral Consulting Ltd was founded in 2003 with its head office based in Luton, UK.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Emailopenemailopen.comHQ: Malibu, CA, United StatesReported employees: 11-50 | Malibu, CA, United States | 11-50 | Exact match | 7 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 · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Postmasterypostmastery.comHQ: Amsterdam-duivendrecht, NetherlandsReported employees: 1-10 | Amsterdam-duivendrecht, Netherlands | 1-10 | Exact match | 6 contacts → |
“Postmastery is dedicated to helping senders maximise their email performance and deliverability with a range of software, tooling and consulting solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Spotlerflowmailer.com HQ: Rotterdam, NetherlandsReported employees: 11-50 | Rotterdam, Netherlands | 11-50 | Exact match | 3 contacts → |
“Flowmailer is built for continuous high-performance, no matter the emails you're sending.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Applied Information Group INCappliedinfogroup.comHQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 |  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 · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Inboxfirstinboxfirst.comHQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 2 contacts → |
“We only serve those who are serious about email marketing so that our customers don't bear the cost of thousands of smaller free accounts.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Mailenablemailenable.comHQ: Murrumbeena, AustraliaReported employees: 1-10 | Murrumbeena, Australia | 1-10 | Exact match | 2 contacts → |
“MailEnable Pty.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Wizemailwizemail.co.ukHQ: Croydon, United KingdomReported employees: 1-10 | Croydon, United Kingdom | 1-10 | Exact match | 2 contacts → |
“WizEmail is an email marketing company formed by marketing specialists totalling decades of years experience in the direct marketing, internet and publishing sectors.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 133 company matches
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Smtp software companies: dataset insights
November 5, 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
133 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 133 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: November 5, 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 ↗
Smtp software companies by location
1 lists · largest firstEvery Smtp software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for smtp 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 smtp software companies did RevenueBase find worldwide?
The saved snapshot records 133 matching company records, 869 tracked contacts and 284 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: November 5, 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
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Cite this list
RevenueBase Data Team. Top 25 smtp software companies worldwide. Snapshot: November 5, 2026. https://revenuebase.ai/companies/browse/smtp-software-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 smtp software companies worldwide
RevenueBase records 133 matching company records for smtp software companies worldwide, with 869 tracked contacts and 284 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: November 5, 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 smtp software companies worldwide
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 | Sinch Mailgunmailgun.com HQ: San Antonio, TX, United StatesReported employees: 201-500 | San Antonio, TX, United States | 201-500 | Exact match | 188 contacts → |
“Sinch Mailgun is the leading email delivery service for businesses around the world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Elastic Emailelasticemail.com HQ: Szczecin, BC, PolandReported employees: 11-50 | Szczecin, BC, Poland | 11-50 | Exact match | 51 contacts → |
“All the email marketing and delivery tools you need to communicate with your customers.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | SMTPsmtp.com HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 50 contacts → |
“SMTP is one of the early pioneers of cloud-based email services and is now part of Ziff Davis, Moz Group and Campaigner.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Maildosomaildoso.ai HQ: Granite Bay, CA, United StatesReported employees: 11-50 | Granite Bay, CA, United States | 11-50 | Exact match | 37 contacts → |
“Maildoso provides high-quality SMTP mailboxes built for cold email deliverability.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Glockappsglockapps.com HQ: Pinedale, WY, United StatesReported employees: 11-50 | Pinedale, WY, United States | 11-50 | Exact match | 21 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 · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Mailchannelsmailchannels.com HQ: Vancouver, BC, CanadaReported employees: 11-50 | Vancouver, BC, Canada | 11-50 | Exact match | 20 contacts → |
“MailChannels ensures your customers' emails are always delivered.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Smtp Provider PVT LTDsmtpprovider.com HQ: Kolkata, IndiaReported employees: 11-50 | Kolkata, India | 11-50 | Exact match | 20 contacts → |
“SMTP Provider Put Ltd was founded in 2012 by an Internet Marketing Company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Smtp2gosmtp2go.com HQ: Christchurch, New ZealandReported employees: 11-50 | Christchurch, New Zealand | 11-50 | Exact match | 17 contacts → |
“Email deliverability matters.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Socketlabssocketlabs.com HQ: Wayne, PA, United StatesReported employees: 11-50 | Wayne, PA, United States | 11-50 | Exact match | 17 contacts → |
“SocketLabs is an email service provider with a full suite of email delivery, management, and performance analysis tools.” Recorded description excerpt · November 5, 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 | 15 contacts → |
“Smarter, high-volume email delivery software for tech leaders & marketers.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Emaillabsemaillabs.io HQ: Poznań, PolandReported employees: 11-50 | Poznań, Poland | 11-50 | Exact match | 14 contacts → |
“EmailLabs was created for those who have a system that generates e-mails.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Duocircleduocircle.com HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 13 contacts → |
“Reliable and Secure email hosting services for SMB and Enterprise.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Cumulo9 Limitedcumulo9.com HQ: Auckland Cbd, New ZealandReported employees: 1-10 | Auckland Cbd, New Zealand | 1-10 | Exact match | 10 contacts → |
“Cumulo9 provides transformational business email services for delivering transactional email documents, marketing campaigns and tracked email signatures.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Mailerevermailerever.com HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 10 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | sending.acsending.ac HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 9 contacts → |
“The only mailbox infrastructure where deliverability just works.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Postmarkpostmarkapp.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 9 contacts → |
“The email delivery service that people actually like.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Prolateral Consulting LTDprolateral.com HQ: Luton, United KingdomReported employees: 11-50 | Luton, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Prolateral Consulting Ltd was founded in 2003 with its head office based in Luton, UK.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Emailopenemailopen.com HQ: Malibu, CA, United StatesReported employees: 11-50 | Malibu, CA, United States | 11-50 | Exact match | 7 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 · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Postmasterypostmastery.com HQ: Amsterdam-duivendrecht, NetherlandsReported employees: 1-10 | Amsterdam-duivendrecht, Netherlands | 1-10 | Exact match | 6 contacts → |
“Postmastery is dedicated to helping senders maximise their email performance and deliverability with a range of software, tooling and consulting solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Spotlerflowmailer.com HQ: Rotterdam, NetherlandsReported employees: 11-50 | Rotterdam, Netherlands | 11-50 | Exact match | 3 contacts → |
“Flowmailer is built for continuous high-performance, no matter the emails you're sending.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Applied Information Group INCappliedinfogroup.com HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | 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 · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Inboxfirstinboxfirst.com HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 2 contacts → |
“We only serve those who are serious about email marketing so that our customers don't bear the cost of thousands of smaller free accounts.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Mailenablemailenable.com HQ: Murrumbeena, AustraliaReported employees: 1-10 | Murrumbeena, Australia | 1-10 | Exact match | 2 contacts → |
“MailEnable Pty.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Wizemailwizemail.co.uk HQ: Croydon, United KingdomReported employees: 1-10 | Croydon, United Kingdom | 1-10 | Exact match | 2 contacts → |
“WizEmail is an email marketing company formed by marketing specialists totalling decades of years experience in the direct marketing, internet and publishing sectors.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 133 company matches
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Smtp software companies: dataset insights
November 5, 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
133 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 133 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: November 5, 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 ↗
Smtp software companies by location
1 lists · largest firstEvery Smtp software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for smtp 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 smtp software companies did RevenueBase find worldwide?
The saved snapshot records 133 matching company records, 869 tracked contacts and 284 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: November 5, 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.
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Cite this list
RevenueBase Data Team. Top 25 smtp software companies worldwide. Snapshot: November 5, 2026. https://revenuebase.ai/companies/browse/smtp-software-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗