Company lists · Data refreshed September 2026

Top 25 Personalization marketing agencies worldwide

Name: Personalization marketing agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 32,394 companies tracked

RevenueBase identified 32,394 personalization marketing agencies worldwide as of September 2026 and tracks 264,958 professional contacts across them, including 65,021 with verified work emails and 45,669 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers personalization marketing agencies 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 5, 2026. Country and city lists for personalization marketing agencies 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 5, 2026 86% judged on-target in blind review

32,394Companies

264,958Contacts tracked

65,021Verified emails

45,669Mobile numbers

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The 25 largest personalization marketing agencies worldwide

Ranked by team size

Top 25 of 32,394 personalization marketing agencies worldwide, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to personalization marketing agencies: 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	Partial evidence	Irving, TX, United StatesHQ checked Sep 5, 2026	5,001-10,000	9,953 contacts →
	Partial 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 5, 2026
2	MONKS	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	5,001-10,000	6,237 contacts →
	Partial 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 5, 2026
3	Zoominfo	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 5, 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 5, 2026
4	Acxiom	Indirect evidence	Conway, AR, United StatesHQ checked Sep 5, 2026	1,001-5,000	3,241 contacts →
	Indirect evidence “Acxiom puts data to work, solving complex challenges for the world’s leading brands and agencies.” Source: RevenueBase Database · checked Sep 5, 2026
5	Zeta Global	Partial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,595 contacts →
	Partial evidence “At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.” Source: RevenueBase Database · checked Sep 5, 2026
6	Localiq	Partial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,534 contacts →
	Partial evidence “Grow your business with digital marketing powered by AI and local expertise.” Source: RevenueBase Database · checked Sep 5, 2026
7	Intuit Mailchimp	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,483 contacts →
	Partial evidence “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Source: RevenueBase Database · checked Sep 5, 2026
8	Valpak	Partial evidence	St Petersburg, FL, RussiaHQ checked Sep 5, 2026	501-1,000	1,376 contacts →
	Partial evidence “Valpak is the leader in American household data, direct marketing and omnichannel media solutions for local and national businesses and brands.” Source: RevenueBase Database · checked Sep 5, 2026
9	Hearts & Science	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,359 contacts →
	Indirect evidence “Hearts & Science, an Omnicom Media Group agency, transforms data signals into meaningful connections between brands and consumers that drive exponential growth.” Source: RevenueBase Database · checked Sep 5, 2026
10	Dialog Direct	Partial evidence	Highland Park, MI, United StatesHQ checked Sep 5, 2026	10001+	1,138 contacts →
	Partial evidence “Dialog Direct helps brands manage and personalize their multichannel, multi-touch customer journeys using data-driven marketing and customer engagement solutions.” Source: RevenueBase Database · checked Sep 5, 2026
11	Data Axle	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 5, 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 5, 2026
12	Demandscience	Indirect evidence	Boston, United StatesHQ checked Sep 5, 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 5, 2026
13	Clearlink	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 5, 2026	501-1,000	988 contacts →
	Partial evidence “Clearlink is an award-winning digital marketing, sales conversion, and technology company headquartered in Salt Lake City.” Source: RevenueBase Database · checked Sep 5, 2026
14	NP Digital	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	866 contacts →
	Indirect evidence “Neil Patel has been recognized by the Wall Street Journal, Forbes, and the United Nations, to name a few, as one of the most influential and successful marketers and entrepreneurs…” Source: RevenueBase Database · checked Sep 5, 2026
15	Marigold	Partial evidence	Nashville, TN, United StatesHQ checked Sep 5, 2026	201-500	820 contacts →
	Partial evidence “Marigold is a global marketing technology company focused on delivering relationship marketing solutions for growing organizations.” Source: RevenueBase Database · checked Sep 5, 2026
16	MERGE	Partial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	501-1,000	816 contacts →
	Partial evidence “MERGE is a marketing and technology agency built for the intersection of health and wellness.” Source: RevenueBase Database · checked Sep 5, 2026
17	SEO Discovery Private Limited	Partial evidence	Mohali, IndiaHQ checked Sep 5, 2026	201-500	755 contacts →
	Partial evidence “SEO Discovery is a global leader in next-generation digital marketing services, solutions, and consulting.” Source: RevenueBase Database · checked Sep 5, 2026
18	Manlitics B2B Ites	Partial evidence	New York, United StatesHQ checked Sep 5, 2026	501-1,000	750 contacts →
	Partial 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 5, 2026
19	Anteriad	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	501-1,000	740 contacts →
	Indirect evidence “Data Driven.” Source: RevenueBase Database · checked Sep 5, 2026
20	Clevertap	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	501-1,000	702 contacts →
	Indirect evidence “CleverTap is the leading all-in-one customer engagement platform that helps brands unlock limitless customer lifetime value.” Source: RevenueBase Database · checked Sep 5, 2026
21	simpli.fi	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 5, 2026	501-1,000	680 contacts →
	Indirect evidence “Simpli.fi is a real-world media platform that connects digital intent with physical movement, helping brands reach audiences in the right place, at the right moment, to drive…” Source: RevenueBase Database · checked Sep 5, 2026
22	Movable INK	Partial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	501-1,000	672 contacts →
	Partial evidence “Movable Ink helps marketers create more relevant customer experiences across email, mobile, and web through data activation, AI-powered decisioning, and personalization at scale.” Source: RevenueBase Database · checked Sep 5, 2026
23	On24	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	501-1,000	622 contacts →
	Indirect evidence “ON24, a Cvent company, is on a mission to help businesses bring their go-to-market strategy into the AI era and drive cost-effective revenue growth.” Source: RevenueBase Database · checked Sep 5, 2026
24	Vertis Communications	Indirect evidence	Sussex, WI, United StatesHQ checked Sep 5, 2026	10001+	605 contacts →
	Indirect evidence “Vertis Communications was acquired by Quad/Graphics in January 2013.” Source: RevenueBase Database · checked Sep 5, 2026
25	Affinion Group	Indirect evidence	Stamford, CT, United StatesHQ checked Sep 5, 2026	1,001-5,000	597 contacts →
	Indirect evidence “Affinion enables companies to connect and engage with their customers, creating rewarding relationships and enhancing brand loyalty.” Source: RevenueBase Database · checked Sep 5, 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: personalization marketing agencies. 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 personalization marketing agencies.
Partial evidence: Its own public description names part of personalization marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name personalization marketing agencies. 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 32,394 personalization marketing agencies worldwide

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Personalization marketing agencies worldwide at a glance

As of Sep 5, 2026

24.5%Verified-email coverage

17.2%Mobile-number coverage

8.2Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

21,717

11-50

8,670

51-200

1,492

201-500

311

501-1,000

1,001-5,000

5,001-10,000

10001+

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 personalization marketing agencies, 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: 64 countries, largest first: the United States, India, Brazil, the United Kingdom, Canada, Australia, Spain, Germany, Pakistan, the United Arab Emirates and 54 more. Country and city lists for personalization marketing agencies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “personalization marketing agencies”. 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 personalization marketing agencies), 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 personalization marketing agencies, 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, 65,021 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 between September 5, 2026 and September 14, 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.

Personalization marketing agencies by location

178 lists · largest first

Every Personalization marketing agencies 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 personalization marketing agencies, 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 personalization marketing agencies are there worldwide?

RevenueBase identified 32,394 personalization marketing agencies 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 personalization marketing agencies?

The United States leads with 9,653 companies, followed by India (3,841) and Brazil (2,314). Every personalization marketing agencies list by country and city is linked on this page.

Which city has the most personalization marketing agencies?

London leads with 807 headquartered companies, followed by Sao Paulo (518) and Dubai (441).

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 65,021 verified decision-maker contacts tracked across these 32,394 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 5, 2026 and September 14, 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.