Company lists · Data refreshed October 2026

Top 25 Email marketing optimization firms worldwide

RevenueBase identified 6,555 company matches for email marketing optimization firms worldwide as of October 2026 and tracks 42,558 professional contacts across them, including 7,536 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for email marketing optimization firms 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 marketing optimization firms 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
6,555Companies
42,558Contacts tracked
7,536Verified emails
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The 25 largest email marketing optimization firms worldwide

Ranked by team size
Top 25 of 6,555 company matches for email marketing optimization firms 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 matchAtlanta, GA, United StatesHQ recorded Oct 1, 20261,001-5,0001,483 contacts →

Exact match

“The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchMumbai, IndiaHQ recorded Oct 1, 2026201-500428 contacts →

Exact match

“Within a short span, eBrandz has seen enormous growth.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchHyderabad, IndiaHQ recorded Oct 1, 2026501-1,000354 contacts →

Exact match

“Aptroid Consulting (India) PVT.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchSan Antonio, TX, United StatesHQ recorded Oct 1, 202651-200163 contacts →

Exact match

“Stirista is the only company that combines data, email, and digital execution to help clients acquire and retain customers by creating a data-driven, repeatable, and scalable…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchAlpharetta, GA, United StatesHQ recorded Oct 1, 202651-200157 contacts →

Exact match

“BAD Marketing is a digital marketing firm dedicated to scaling our client's brands through unique marketing strategies.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchMorrisville, NC, United StatesHQ recorded Oct 1, 202651-200137 contacts →

Exact match

“We believe powerful connections propel business growth.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, CA, United StatesHQ recorded Oct 1, 202651-200122 contacts →

Exact match

“In 2005, we started as a web design agency, but we soon discovered email marketing and fell in love with it.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchBijnor, IndiaHQ recorded Oct 1, 202651-200118 contacts →

Exact match

“Leave Code offers you the best digital marketing services for your products and services.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchSt. Louis, MO, United StatesHQ recorded Oct 1, 202651-200115 contacts →

Exact match

“Benchmark helps busy marketers move faster and make a bigger impact with email.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-200112 contacts →

Exact match

“GAIN Conversion is the world's leading CRO agency.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchBarcelona, EstoniaHQ recorded Oct 1, 202651-200112 contacts →

Exact match

“A global Email Marketing Agency to help supercharge #ecommerce revenues with highly specialised #EmailMarketing services Hit us up for a Free Marketing Audit”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchNew York, NY, United StatesHQ recorded Oct 1, 202651-200109 contacts →

Exact match

“RankFast is a data-driven digital marketing agency dedicated to accelerating growth for Ecommerce, SaaS, Local Businesses, and Enterprises.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact 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
14Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-200102 contacts →

Exact match

“Underground Ecom is a rapidly growing Email marketing agency specialising in helping ecommerce businesses reach their full potential through retention marketing.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchTambaram, IndiaHQ recorded Oct 1, 202651-20098 contacts →

Exact match

“VINTORIX is the most affordable digital marketing company in Chennai.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchHo Chi Minh City, VietnamHQ recorded Oct 1, 202651-20098 contacts →

Exact match

“Dịch vụ Seo của Công ty GTV SEO giúp các doanh nghiệp không chỉ có thêm nhiều khách hàng và lợi nhuận hàng tháng mà còn giúp cho các doanh nghiệp xây dựng thương hiệu và chỗ đứng…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchShatin, Hong KongHQ recorded Oct 1, 202651-20096 contacts →

Exact match

“Radica is a leading Marketing Automation Provider, we synergize technology, ideas and customer intelligence to acquire, manage and optimize e-database to create monetary value…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchMelbourne, AustraliaHQ recorded Oct 1, 2026n/a95 contacts →

Exact match

“We are not a normal marketing agency.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20091 contacts →

Exact match

“At EmailClub, we are building the strongest CRM team on the market.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchFreiburg, GermanyHQ recorded Oct 1, 202651-20090 contacts →

Exact match

“Inxmail ist der serviceorientierte Tech-Spezialist für sichere, datengetriebene Kommunikation im E-Mail-Marketing.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchDoylestown, PA, United StatesHQ recorded Oct 1, 202651-20090 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 1, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, CA, United StatesHQ recorded Oct 1, 2026201-50089 contacts →

Exact match

“Instapage is a complete growth marketing platform with the #1-rated builder for PPC, SEO, demand generation, A/B testing, personalization, and email automation.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchMiami, FL, United StatesHQ recorded Oct 1, 202611-5088 contacts →

Exact match

“With more than a decade of experience Paper Street Media can help you leverage manpower and increase your capacity for marketing and web design projects.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchSan Francisco, CA, United StatesHQ recorded Oct 1, 202611-5088 contacts →

Exact match

“Mailmodo is a complete email marketing solution enabling users to create and send app-like interactive emails to improve email conversions.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchNew York, ON, United StatesHQ recorded Oct 1, 2026201-50087 contacts →

Exact match

“DFO Performance: Elevating E-Commerce & Lead Generation for Scalable Success At DFO Performance, we specialize in propelling brands to new heights with powerful, data-driven…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 6,555 email marketing optimization firms worldwide

See the full list, filter by size, metro and specialty, and access 7,536 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Email marketing optimization firms worldwide at a glance

As of Oct 1, 2026
17.7%Verified-email coverage
6.5Average contacts per company
1-10Median size (employees)
2.4%Largest-city concentration · London
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
4,809
11-50
1,391
51-200
258
201-500
50
501-1,000
13
1,001-5,000
14
10001+
6

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 marketing optimization firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “email marketing optimization firms” 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 7,536 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 marketing optimization firms by location

33 lists · largest first

Every Email marketing optimization firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 marketing optimization firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many email marketing optimization firms are there worldwide?

RevenueBase identified 6,555 company matches for email marketing optimization firms 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?

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

Which country has the most email marketing optimization firms?

The United States leads with 1,817 companies, followed by India (521) and the United Kingdom (416). Every email marketing optimization firms list by country and city is linked on this page.

Which city has the most email marketing optimization firms?

London leads with 160 company records, followed by New York (100) and Los Angeles (61).

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 7,536 professional contacts with verified work emails tracked across these 6,555 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.