Company lists · Data refreshed October 2026

Top 25 Email deliverability software worldwide

RevenueBase identified 418 company matches for email deliverability software worldwide as of October 2026 and tracks 2,508 professional contacts across them, including 584 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for email deliverability software 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 October 1, 2026. Country and city lists for email deliverability software 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 1, 2026 How this list was built
418Companies
2,508Contacts tracked
584Verified emails
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The 25 largest email deliverability software worldwide

Ranked by team size
Top 25 of 418 company matches for email deliverability software worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDover, DE, United StatesHQ recorded Oct 1, 202651-200129 contacts →

Exact match

“EasyDMARC is your one-stop platform that secures your email domain infrastructure and boosts email deliverability for your peace of mind.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchSanta Barbara, CA, United StatesHQ recorded Oct 1, 202651-200105 contacts →

Exact match

“ZeroBounce is an email validation, deliverability and email finding platform helping businesses reduce bounces and land their emails in the inbox.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchTel Aviv, CA, IsraelHQ recorded Oct 1, 202651-200104 contacts →

Exact match

“Email Warm-Up & Deliverability Platform | Land in the Inbox, Not Spam Warmy is an AI-powered email deliverability platform trusted by businesses, marketers, and sales teams…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchCambridge, MA, United StatesHQ recorded Oct 1, 202651-20070 contacts →

Exact match

“At Litmus, we know the importance of continuous innovation.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchSzczecin, PolandHQ recorded Oct 1, 202611-5047 contacts →

Exact match

“All the email marketing and delivery tools you need to communicate with your customers.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchOttawa, ON, CanadaHQ recorded Oct 1, 202651-20047 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 · Oct 1, 2026 · View company records in RevenueBase
7Exact matchBangalore, IndiaHQ recorded Oct 1, 202651-20045 contacts →

Exact match

“Kasplo is a cloud-based email delivery and management service designed to help businesses send transactional and marketing emails on a large scale.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchGranite Bay, CA, United StatesHQ recorded Oct 1, 202611-5037 contacts →

Exact match

“Maildoso provides high-quality SMTP and Google mailboxes built for cold email deliverability.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchCentennial, CO, United StatesHQ recorded Oct 1, 202611-5036 contacts →

Exact match

“Put your best email forward with Email on Acid!”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchFreiburg, GermanyHQ recorded Oct 1, 202611-5034 contacts →

Exact match

“rapidmail ist die einfach gute Newsletter-Software „made in Germany” Als Teil des digitalen Ökosystems von Positive lassen sich mit Positive rapidmail mit nur wenigen Klicks…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-5030 contacts →

Exact match

“Since 2013, mailercloud has expanded to become one of the largest and most extensive cloud-based email services, that resolves the task of reliably delivering emails on behalf of…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchDover, DE, United StatesHQ recorded Oct 1, 202651-20029 contacts →

Exact match

“Folderly is an all-in-one email deliverability platform to supercharge your email performance.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchAugusta, GA, IndiaHQ recorded Oct 1, 202611-5028 contacts →

Exact match

“Email Industries is a US-based email deliverability services provider that offers innovative products and services aimed at helping businesses like yours optimize their email…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchChemnitz, GermanyHQ recorded Oct 1, 202651-20026 contacts →

Exact match

“Bei MAILINGWORK haben wir uns auf die Entwicklung eines hochwertigen E-Mail Marketing Tools spezialisiert, um den anspruchsvollen Anforderungen im Mittelstand und…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchAustin, TX, United StatesHQ recorded Oct 1, 202611-5026 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 1, 2026 · View company records in RevenueBase
16Exact matchPinedale, WY, United StatesHQ recorded Oct 1, 202611-5025 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 1, 2026 · View company records in RevenueBase
17Exact matchCharlotte, NC, United StatesHQ recorded Oct 1, 202611-5023 contacts →

Exact match

“Inbox Monster helps email teams send epic messages to every inbox.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchDallas, TX, United StatesHQ recorded Oct 1, 202611-5021 contacts →

Exact match

“Kickbox provides technology that promotes email best practices and improves inbox placement, including a full suite of deliverability monitoring and management tools.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchLille, FranceHQ recorded Oct 1, 202611-5019 contacts →

Exact match

“Routage email Mindbaz est une application saas de routage email.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchVancouver, BC, CanadaHQ recorded Oct 1, 202611-5018 contacts →

Exact match

“MailChannels ensures your customers' emails are always delivered.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchPune, IndiaHQ recorded Oct 1, 20261-1018 contacts →

Exact match

“Most B2B SaaS outbound fails before a single email is sent.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchChristchurch, New ZealandHQ recorded Oct 1, 202611-5016 contacts →

Exact match

“Email deliverability matters.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchWilmington, DE, United StatesHQ recorded Oct 1, 202611-5014 contacts →

Exact match

“At SendX, we’re passionate about making email marketing simple, affordable, and highly effective.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchBarcelona, SpainHQ recorded Oct 1, 202611-5014 contacts →

Exact match

“Mittum es la Herramienta de email marketing perteneciente al Grupo VIKO, con una trayectoria de más de 13 años en envío y monitorización de campañas de email, bien sean de…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchWayne, PA, United StatesHQ recorded Oct 1, 202611-5013 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 · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 418 email deliverability software worldwide

See the full list, filter by size, metro and specialty, and access 584 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Email deliverability software worldwide at a glance

As of Oct 1, 2026
23.3%Verified-email coverage
6.0Average contacts per company
1-10Median size (employees)
3.8%Largest-city concentration · London
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
253
11-50
132
51-200
22
201-500
7
501-1,000
1
1,001-5,000
1

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 email deliverability software are linked below.
What qualifies
Company records worldwide whose business descriptions match “email deliverability software” 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 584 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 1, 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 deliverability software by location

3 lists · largest first

Every Email deliverability software 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 “email deliverability software”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many email deliverability software are there worldwide?

RevenueBase identified 418 company matches for email deliverability software worldwide 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?

Easydmarc tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most email deliverability software?

The United States leads with 127 companies, followed by India (33) and the United Kingdom (33). Every email deliverability software list by country and city is linked on this page.

Which city has the most email deliverability software?

London leads with 16 company records, followed by New York (13) and San Francisco (9).

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 584 professional contacts with verified work emails tracked across these 418 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 1, 2026.

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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.