Company lists · Data refreshed September 2026

Top 25 Customer retention agencies worldwide

Name: Customer retention agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 11,926 companies tracked

RevenueBase identified 11,926 customer retention agencies worldwide as of September 2026 and tracks 120,843 professional contacts across them, including 28,520 with verified work emails. The United States is the largest market and London the largest hub.

This list covers customer retention 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 19, 2026. Country and city lists for customer retention 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 RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

11,926Companies

120,843Contacts tracked

28,520Verified emails

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The 25 largest customer retention agencies worldwide

Ranked by team size

Top 25 of 11,926 customer retention agencies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to customer retention 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	Merkle	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 19, 2026	10001+	4,731 contacts →
	Indirect evidence “Merkle, a dentsu company, powers the experience economy.” Source: RevenueBase Database · checked Sep 19, 2026
2	Dunnhumby	Indirect evidence	Brook Green, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,857 contacts →
	Indirect evidence “dunnhumby helps businesses grow through faster, better decision making, as the essential intelligence layer connecting the world’s leading retailers and brands.” Source: RevenueBase Database · checked Sep 19, 2026
3	MRM	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,627 contacts →
	Indirect evidence “MRM is a modern relationship marketing agency that builds enduring brand relationships.” Source: RevenueBase Database · checked Sep 19, 2026
4	EXL Services LTD	Indirect evidence	n/a	n/a	1,373 contacts →
	Indirect evidence “Established in 1994, we provide a blend of business strategy, marketing services, behavioural change and executive coaching services and techniques to help grow the business of…” Source: RevenueBase Database · checked Sep 19, 2026
5	BRM S.A.S	Indirect evidence	Bogotá, ColombiaHQ checked Sep 19, 2026	1,001-5,000	1,363 contacts →
	Indirect evidence “Las conexiones más poderosas surgen de interacciones sencillas que marcan la diferencia.” Source: RevenueBase Database · checked Sep 19, 2026
6	Dialog Direct	Partial evidence	Highland Park, MI, United StatesHQ checked Sep 19, 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 19, 2026
7	IKÉ Asistencia	Indirect evidence	MexicoHQ checked Sep 19, 2026	1,001-5,000	1,023 contacts →
	Indirect evidence “En iké todos los días brindamos soluciones de personas hacia personas alrededor del mundo, aumentando la oferta de empresas que preocupadas por brindar respaldo, seguridad y…” Source: RevenueBase Database · checked Sep 19, 2026
8	TLC Worldwide	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	979 contacts →
	Partial evidence “TLC Worldwide is a global leader in customer engagement, loyalty, and reward solutions.” Source: RevenueBase Database · checked Sep 19, 2026
9	SEM	Indirect evidence	Sariyer, TürkiyeHQ checked Sep 19, 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 19, 2026
10	ITA Group, INC	Partial evidence	West Des Moines, IA, United StatesHQ checked Sep 19, 2026	501-1,000	868 contacts →
	Partial evidence “ITA Group helps leading brands around the world take action with confidence, resulting in increased sales, purchases, retention, referrals and alignment.” Source: RevenueBase Database · checked Sep 19, 2026
11	Madison Digital Experience Marketing	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	1,001-5,000	741 contacts →
	Indirect evidence “En MADISON MK prestamos servicios comerciales y de marketing para todas las fases del ciclo de vida del consumidor, acompañando a las marcas para definir la estrategia y acciones…” Source: RevenueBase Database · checked Sep 19, 2026
12	TCC Global	Indirect evidence	Amsterdam, GermanyHQ checked Sep 19, 2026	501-1,000	740 contacts →
	Indirect evidence “At TCC we believe value creation is everything.” Source: RevenueBase Database · checked Sep 19, 2026
13	CXG	Partial evidence	Dubai, United Arab EmiratesHQ checked Sep 19, 2026	201-500	612 contacts →
	Partial evidence “CXG provides innovative solutions to enhance customer experience and improve the performance of premium and luxury brands.” Source: RevenueBase Database · checked Sep 19, 2026
14	Bond Brand Loyalty	Partial evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	501-1,000	610 contacts →
	Partial evidence “Bond is the customer-intelligence driven engagement company.” Source: RevenueBase Database · checked Sep 19, 2026
15	Vertis Communications	Indirect evidence	Sussex, WI, United StatesHQ checked Sep 19, 2026	10001+	605 contacts →
	Indirect evidence “Vertis Communications was acquired by Quad/Graphics in January 2013.” Source: RevenueBase Database · checked Sep 19, 2026
16	Affinion Group	Partial evidence	Stamford, CT, United StatesHQ checked Sep 19, 2026	1,001-5,000	597 contacts →
	Partial evidence “Affinion enables companies to connect and engage with their customers, creating rewarding relationships and enhancing brand loyalty.” Source: RevenueBase Database · checked Sep 19, 2026
17	Belltech	Indirect evidence	Las Condes, ChileHQ checked Sep 19, 2026	201-500	579 contacts →
	Indirect evidence “Belltech te ayuda a entender el comportamiento de tus clientes impulsado por una estrategia basada en los datos, para poder entregar experiencias que sean personalizadas…” Source: RevenueBase Database · checked Sep 19, 2026
18	Marketdata	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	201-500	547 contacts →
	Indirect evidence “A Marketdata é uma das mais completas empresas de marketing de relacionamento do mercado latino-americano.” Source: RevenueBase Database · checked Sep 19, 2026
19	Logic, Part Of Accenture	Indirect evidence	Bloomington, MN, United StatesHQ checked Sep 19, 2026	1,001-5,000	496 contacts →
	Indirect evidence “Logic works with the world’s leading retailers to help them move faster, innovate smarter, and thrive in the face of retail disruption.” Source: RevenueBase Database · checked Sep 19, 2026
20	YES Marketing	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	201-500	483 contacts →
	Indirect evidence “Yes Marketing focuses on enabling marketers to engage, acquire and retain consumers along each stage of the consumer journey with a brand – from awareness through consideration…” Source: RevenueBase Database · checked Sep 19, 2026
21	Sg360	Indirect evidence	Wheeling, IL, United StatesHQ checked Sep 19, 2026	501-1,000	477 contacts →
	Indirect evidence “sg360° can help you identify and connect with your best prospects 1:1, both offline and on.” Source: RevenueBase Database · checked Sep 19, 2026
22	Infogroup	Partial evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	476 contacts →
	Partial evidence “Infogroup is a big data, analytics, and marketing services provider that delivers best in class data-driven customer-centric technology solutions.” Source: RevenueBase Database · checked Sep 19, 2026
23	Numberly	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	501-1,000	474 contacts →
	Indirect evidence “Numberly, Marketing Technologist, is a major player in the field of data marketing.” Source: RevenueBase Database · checked Sep 19, 2026
24	Hansa Cequity	Indirect evidence	Kurla (w), IndiaHQ checked Sep 19, 2026	201-500	415 contacts →
	Indirect evidence “Hansa Cequity is a data-driven, technology-enabled marketing consulting company.” Source: RevenueBase Database · checked Sep 19, 2026
25	Loylty Rewardz	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	501-1,000	372 contacts →
	Indirect evidence “Loylty Rewardz Mngt.” Source: RevenueBase Database · checked Sep 19, 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: customer retention 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 customer retention agencies.
Partial evidence: Its own public description names part of customer retention agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer retention 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 11,926 customer retention agencies worldwide

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Customer retention agencies worldwide at a glance

As of Sep 19, 2026

23.6%Verified-email coverage

10.1Average contacts per company

1-10Median size (employees)

2.2%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

8,022

11-50

2,956

51-200

661

201-500

176

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among customer retention 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: Every country. Country and city lists for customer retention agencies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer retention 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 customer retention 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 customer retention 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, 28,520 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 19, 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.

Customer retention agencies by location

68 lists · largest first

Every Customer retention 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 customer retention 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 customer retention agencies are there worldwide?

RevenueBase identified 11,926 customer retention 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?

Merkle, headquartered in Columbia, tops this list with the largest team on record.

Which country has the most customer retention agencies?

The United States leads with 3,648 companies, followed by the United Kingdom (764) and Brazil (555). Every customer retention agencies list by country and city is linked on this page.

Which city has the most customer retention agencies?

London leads with 258 headquartered companies, followed by Sao Paulo (180) and New York (146).

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 28,520 verified decision-maker contacts tracked across these 11,926 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 19, 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.