Company lists · Data refreshed November 2026

Top 25 Email marketing optimization services worldwide

Name: Email marketing optimization services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 6,485 companies tracked

RevenueBase identified 6,485 company matches for email marketing optimization services worldwide as of November 2026 and tracks 46,891 professional contacts across them, including 9,607 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 services 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 email marketing optimization services 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 Nov 5, 2026 How this list was built

6,485Companies

46,891Contacts tracked

9,607Verified emails

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The 25 largest email marketing optimization services worldwide

Ranked by team size

Top 25 of 6,485 company matches for email marketing optimization services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Kinesso	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	5,001-10,000	2,407 contacts →
	Exact match “KINESSO is the technology-driven performance marketing agency within Omnicom Media that provides actionable growth for both agency partners and clients.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Intuit Mailchimp	Exact match	Atlanta, GA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,430 contacts →
	Exact match “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Sg360	Exact match	Wheeling, IL, United StatesHQ recorded Nov 5, 2026	501-1,000	491 contacts →
	Exact match “sg360° can help you identify and connect with your best prospects 1:1, both offline and on.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Hansa Cequity	Exact match	Kurla (w), IndiaHQ recorded Nov 5, 2026	201-500	420 contacts →
	Exact match “Hansa Cequity is a data-driven, technology-enabled marketing consulting company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Aptroid Consulting India Pvt. LTD	Exact match	Hyderabad, IndiaHQ recorded Nov 5, 2026	501-1,000	373 contacts →
	Exact match “Aptroid Consulting (India) PVT.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Outerbox	Exact match	Akron, OH, United StatesHQ recorded Nov 5, 2026	201-500	346 contacts →
	Exact match “At OuterBox, we believe growth is oxygen.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	AB Tasty NOW Wingify	Exact match	Paris, FranceHQ recorded Nov 5, 2026	201-500	306 contacts →
	Exact match “AB Tasty started when two founders, Alix de Sagazan and Rémi Aubert, struck out on their own with a simple idea: experimentation and personalization should be faster and easier…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	marketing.com	Exact match	Eureka, MO, United StatesHQ recorded Nov 5, 2026	1,001-5,000	300 contacts →
	Exact match “From click to print and everything in between, we’re not changing marketing, just how it’s done.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Omnisend	Exact match	Global, United KingdomHQ recorded Nov 5, 2026	201-500	298 contacts →
	Exact match “Let’s be real.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	GO Inspire Group	Exact match	Leicester, United KingdomHQ recorded Nov 5, 2026	201-500	227 contacts →
	Exact match “Welcome to Go Inspire - Your Marketing Performance Partner!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Stirista	Exact match	San Antonio, TX, United StatesHQ recorded Nov 5, 2026	51-200	197 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 · Nov 5, 2026 · View company records in RevenueBase
12	BAD Marketing	Exact match	Alpharetta, GA, United StatesHQ recorded Nov 5, 2026	51-200	158 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 · Nov 5, 2026 · View company records in RevenueBase
13	Icontact	Exact match	Morrisville, NC, United StatesHQ recorded Nov 5, 2026	51-200	147 contacts →
	Exact match “We believe powerful connections propel business growth.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Mailerlite	Exact match	San Francisco, CA, United StatesHQ recorded Nov 5, 2026	51-200	138 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 · Nov 5, 2026 · View company records in RevenueBase
15	Hustler Marketing	Exact match	Barcelona, EstoniaHQ recorded Nov 5, 2026	51-200	129 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 · Nov 5, 2026 · View company records in RevenueBase
16	Benchmark Email	Exact match	St. Louis, MO, United StatesHQ recorded Nov 5, 2026	51-200	121 contacts →
	Exact match “Benchmark helps busy marketers move faster and make a bigger impact with email.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Emailclub	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	111 contacts →
	Exact match “At EmailClub, we are building the strongest CRM team on the market.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	GTV SEO	Exact match	Ho Chi Minh City, VietnamHQ recorded Nov 5, 2026	51-200	110 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 · Nov 5, 2026 · View company records in RevenueBase
19	Doppler	Exact match	San Antonio, United StatesHQ recorded Nov 5, 2026	51-200	107 contacts →
	Exact match “Plataforma de Marketing Multicanal, simple y potenciado por IA.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Rankfast Search Marketing Company	Exact match	New York, NY, United StatesHQ recorded Nov 5, 2026	51-200	106 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 · Nov 5, 2026 · View company records in RevenueBase
21	Underground Ecom	Exact match	London, United KingdomHQ recorded Nov 5, 2026	51-200	104 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 · Nov 5, 2026 · View company records in RevenueBase
22	Minders	Exact match	Barrio Norte, ArgentinaHQ recorded Nov 5, 2026	51-200	100 contacts →
	Exact match “We don’t do quick wins.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Radica Systems Limited	Exact match	Shatin, Hong KongHQ recorded Nov 5, 2026	51-200	99 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 · Nov 5, 2026 · View company records in RevenueBase
24	Klientboost	Exact match	Costa Mesa, CA, United StatesHQ recorded Nov 5, 2026	51-200	98 contacts →
	Exact match “1st & only marketing agency to ever win Glassdoor's #1 Best Place To Work Award (2022) KlientBoost is the performance marketing agency with the most published wins (case studies…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Inxmail	Exact match	Freiburg, GermanyHQ recorded Nov 5, 2026	51-200	97 contacts →
	Exact match “Inxmail ist der serviceorientierte Tech-Spezialist für sichere, datengetriebene Kommunikation im E-Mail-Marketing.” 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 “email marketing optimization services”. 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 6,485 email marketing optimization services worldwide

See the full list, filter by size, metro and specialty, and access 9,607 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Email marketing optimization services worldwide at a glance

As of Nov 5, 2026

20.5%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

4,760

11-50

1,342

51-200

257

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 services are linked below.
What qualifies: Company records worldwide whose business descriptions match “email marketing optimization services” 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 9,607 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.

Email marketing optimization services by location

39 lists · largest first

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

How many email marketing optimization services are there worldwide?

RevenueBase identified 6,485 company matches for email marketing optimization services 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?

Kinesso 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 services?

The United States leads with 1,591 companies, followed by India (515) and the United Kingdom (436). Every email marketing optimization services list by country and city is linked on this page.

Which city has the most email marketing optimization services?

London leads with 166 company records, followed by New York (92) and Bangalore (53).

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 9,607 professional contacts with verified work emails tracked across these 6,485 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.

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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.