Company lists · Data refreshed September 2026

Top 25 Outsourced martech companies worldwide

Name: Outsourced martech companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 29,992 companies tracked

RevenueBase identified 29,992 outsourced martech companies worldwide as of September 2026 and tracks 274,371 professional contacts across them, including 59,310 with verified work emails. The United States is the largest market and London the largest hub.

This list covers outsourced martech companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026. Country and city lists for outsourced martech companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

29,992Companies

274,371Contacts tracked

59,310Verified emails

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The 25 largest outsourced martech companies worldwide

Ranked by team size

Top 25 of 29,992 outsourced martech companies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to outsourced martech companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Epsilon	Indirect evidence	Irving, TX, United StatesHQ checked Sep 21, 2026	5,001-10,000	9,953 contacts →
	Indirect evidence “Epsilon is a global leader in data and identity with deep expertise in digital media, clean rooms, customer data platforms, loyalty and marketing services.” Source: RevenueBase Database · checked Sep 21, 2026
2	MONKS	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	5,001-10,000	6,237 contacts →
	Indirect evidence “Monks combines an extraordinary range of global marketing and technology services to accelerate business possibilities and redefine how brands and businesses interact with the…” Source: RevenueBase Database · checked Sep 21, 2026
3	HIBU	Indirect evidence	Cedar Rapids, IA, United StatesHQ checked Sep 21, 2026	1,001-5,000	4,426 contacts →
	Indirect evidence “Hibu is a leading provider of technology-driven, integrated digital marketing solutions for America’s local businesses, trusted by tens of thousands of local business owners.” Source: RevenueBase Database · checked Sep 21, 2026
4	Zoominfo	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 21, 2026	1,001-5,000	4,029 contacts →
	Indirect evidence “ZoomInfo (NASDAQ: GTM) is the go-to-market platform that helps businesses find, acquire and grow their customers.” Source: RevenueBase Database · checked Sep 21, 2026
5	Xdbs Worldwide	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 21, 2026	1,001-5,000	3,498 contacts →
	Indirect evidence “At XDBS, we primarily work with media agencies, publishers and marketing companies looking to leverage marketing automation and digital marketing capacity and capability to…” Source: RevenueBase Database · checked Sep 21, 2026
6	Zeta Global	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,595 contacts →
	Indirect evidence “At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.” Source: RevenueBase Database · checked Sep 21, 2026
7	Affinityx	Indirect evidence	Elgin, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,258 contacts →
	Indirect evidence “AffinityX is a new kind of technology company built on decades of operational process excellence.” Source: RevenueBase Database · checked Sep 21, 2026
8	Caci LTD	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	1,663 contacts →
	Indirect evidence “CACI offers an unrivalled range of data, marketing and IT solutions to a wide range of industries across both the public and private sectors.” Source: RevenueBase Database · checked Sep 21, 2026
9	Stackadapt	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	1,633 contacts →
	Indirect evidence “StackAdapt is the leading technology company that empowers marketers to reach, engage, and convert audiences with precision.” Source: RevenueBase Database · checked Sep 21, 2026
10	Localiq	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,534 contacts →
	Indirect evidence “Grow your business with digital marketing powered by AI and local expertise.” Source: RevenueBase Database · checked Sep 21, 2026
11	Grazitti Interactive	Indirect evidence	Mountain View, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,506 contacts →
	Indirect evidence “Grazitti Interactive is a digital innovation leader with offices in India, USA, Australia, and Singapore.” Source: RevenueBase Database · checked Sep 21, 2026
12	Intuit Mailchimp	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,483 contacts →
	Indirect evidence “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Source: RevenueBase Database · checked Sep 21, 2026
13	Verticurl A WPP Company	Indirect evidence	SingaporeHQ checked Sep 21, 2026	1,001-5,000	1,256 contacts →
	Indirect evidence “Verticurl, a division of Ogilvy, was established in 2006 with the mission to be the world’s leading marketing technology services agency for multinational organizations.” Source: RevenueBase Database · checked Sep 21, 2026
14	Data Axle	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,088 contacts →
	Indirect evidence “Data Axle helps clients create a foundation of clean data, find new leads, develop winning strategies, design beautiful campaigns, and can handle all day-to-day execution needs” Source: RevenueBase Database · checked Sep 21, 2026
15	Demandscience	Indirect evidence	Boston, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,087 contacts →
	Indirect evidence “With proprietary data and omni-channel activation like events, content, programmatic and chat, we cut through the noise to reach entire buyer groups, driving engagement and impact…” Source: RevenueBase Database · checked Sep 21, 2026
16	2x	Indirect evidence	Malvern, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,046 contacts →
	Indirect evidence “2X is the global leader in B2B marketing-as-a-service (MaaS), a subscription-based alternative to traditional B2B marketing delivery models.” Source: RevenueBase Database · checked Sep 21, 2026
17	Logical Position	Indirect evidence	Lake Oswego, OR, United StatesHQ checked Sep 21, 2026	501-1,000	899 contacts →
	Indirect evidence “Logical Position (LP) is an Inc.” Source: RevenueBase Database · checked Sep 21, 2026
18	SEM	Indirect evidence	Sariyer, TürkiyeHQ checked Sep 21, 2026	n/a	883 contacts →
	Indirect evidence “SEM is a global new generation consumer marketing and technologies brand where we combine growth consultancy, advanced analytics, digital marketing and technology services under…” Source: RevenueBase Database · checked Sep 21, 2026
19	WEBFX	Indirect evidence	Harrisburg, PA, United StatesHQ checked Sep 21, 2026	501-1,000	866 contacts →
	Indirect evidence “We're here to be your digital marketing growth partner in the AI era.” Source: RevenueBase Database · checked Sep 21, 2026
20	Activecampaign	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	863 contacts →
	Indirect evidence “ActiveCampaign is the AI-first autonomous marketing platform built to transform how marketers, agencies, and entrepreneurs work.” Source: RevenueBase Database · checked Sep 21, 2026
21	Ziff Davis Performance Marketing	Indirect evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	821 contacts →
	Indirect evidence “ZDPM is the coming together of Salesify and DemandShore.” Source: RevenueBase Database · checked Sep 21, 2026
22	Marigold	Indirect evidence	Nashville, TN, United StatesHQ checked Sep 21, 2026	201-500	820 contacts →
	Indirect evidence “Marigold is a global marketing technology company focused on delivering relationship marketing solutions for growing organizations.” Source: RevenueBase Database · checked Sep 21, 2026
23	Cadastra	Indirect evidence	São Paulo, BrazilHQ checked Sep 21, 2026	501-1,000	786 contacts →
	Indirect evidence “We are a global company that blends digital marketing services, consulting and technology.” Source: RevenueBase Database · checked Sep 21, 2026
24	Innerworkings	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	757 contacts →
	Partial evidence “Founded in 1991, HH Global is a global outsourced marketing execution provider.” Source: RevenueBase Database · checked Sep 21, 2026
25	Manlitics B2B Ites	Indirect evidence	New York, United StatesHQ checked Sep 21, 2026	501-1,000	750 contacts →
	Indirect evidence “In an ERA of new and emerging digital mediums, we align our core expertise of today’s ever-changing technology with a clear understanding of traditional marketing methods without…” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: outsourced martech companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names outsourced martech companies.
Partial evidence: Its own public description names part of outsourced martech companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outsourced martech companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 29,992 outsourced martech companies worldwide

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Outsourced martech companies worldwide at a glance

As of Sep 21, 2026

21.6%Verified-email coverage

9.1Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

19,530

11-50

8,094

51-200

1,715

201-500

401

501-1,000

115

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among outsourced martech companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for outsourced martech companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “outsourced martech companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names outsourced martech companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among outsourced martech companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 59,310 across the full list. 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 September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Outsourced martech companies by location

125 lists · largest first

Every Outsourced martech companies 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 Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names outsourced martech companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many outsourced martech companies are there worldwide?

RevenueBase identified 29,992 outsourced martech companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Epsilon, headquartered in Irving, tops this list with the largest team on record.

Which country has the most outsourced martech companies?

The United States leads with 7,460 companies, followed by India (4,049) and the United Kingdom (1,637). Every outsourced martech companies list by country and city is linked on this page.

Which city has the most outsourced martech companies?

London leads with 594 headquartered companies, followed by Pune (432) and New York (338).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 59,310 verified decision-maker contacts tracked across these 29,992 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 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 Smart Search, 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.