Company lists · Data refreshed September 2026

Top 25 Customer engagement marketing firms worldwide

Name: Customer engagement marketing firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 42,959 companies tracked

RevenueBase identified 42,959 customer engagement marketing firms worldwide as of September 2026 and tracks 396,498 professional contacts across them, including 86,085 with verified work emails. The United States is the largest market and London the largest hub.

This list covers customer engagement marketing firms 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 engagement marketing firms 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 19, 2026 86% judged on-target in blind review

42,959Companies

396,498Contacts tracked

86,085Verified emails

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The 25 largest customer engagement marketing firms worldwide

Ranked by team size

Top 25 of 42,959 customer engagement marketing firms worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to customer engagement marketing firms: 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	QUAD	Partial evidence	Sussex, WI, United StatesHQ checked Sep 19, 2026	10001+	9,567 contacts →
	Partial evidence “Quad (NYSE: QUAD) is a global marketing experience company that helps brands make direct consumer connections, from household to in-store to online.” Source: RevenueBase Database · checked Sep 19, 2026
2	V4 Company	Partial evidence	Campinas, BrazilHQ checked Sep 19, 2026	1,001-5,000	5,079 contacts →
	Partial evidence “Somos uma assessoria de marketing focada em construir e otimizar o processo de vendas através da internet conectando pessoas que geram resultados com empresas que buscam vender…” Source: RevenueBase Database · checked Sep 19, 2026
3	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
4	Ibex. Pakistan	Indirect evidence	Karachi, PakistanHQ checked Sep 19, 2026	10001+	4,161 contacts →
	Indirect evidence “ibex.” Source: RevenueBase Database · checked Sep 19, 2026
5	Mosaic North America	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	5,001-10,000	3,014 contacts →
	Indirect evidence “At Mosaic, we change the way people experience brands and make moments that stick.” Source: RevenueBase Database · checked Sep 19, 2026
6	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
7	MRM	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,627 contacts →
	Partial evidence “MRM is a modern relationship marketing agency that builds enduring brand relationships.” Source: RevenueBase Database · checked Sep 19, 2026
8	Marketing Werks	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	n/a	2,182 contacts →
	Strong evidence “Marketing Werks has become Product Connections, a fully integrated engagement agency specializing in omnichannel solutions that build relationships between brands and consumers.” Source: RevenueBase Database · checked Sep 19, 2026
9	BRAZE	Strong evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,142 contacts →
	Strong evidence “Braze is the leading customer engagement platform that empowers brands to Be Absolutely Engaging.™ Braze allows any marketer to collect and take action on any amount of data from…” Source: RevenueBase Database · checked Sep 19, 2026
10	Actionline	Partial evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	1,001-5,000	1,921 contacts →
	Partial evidence “Actionline is dedicated to connecting brands with their customers, strengthening their presence and value at every touchpoint.” Source: RevenueBase Database · checked Sep 19, 2026
11	BI Worldwide	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,905 contacts →
	Partial evidence “BI WORLDWIDE is a global engagement agency that uses the principles of behavioral economics to produce measurable business results by designing and delivering solutions that…” Source: RevenueBase Database · checked Sep 19, 2026
12	Razorfish	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,763 contacts →
	Indirect evidence “Hi there!” Source: RevenueBase Database · checked Sep 19, 2026
13	Constant Contact	Partial evidence	Waltham, MA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,611 contacts →
	Partial evidence “We deliver for small businesses with powerful tools to simplify and amplify digital marketing.” Source: RevenueBase Database · checked Sep 19, 2026
14	Power Digital Marketing	Partial evidence	San Diego, CA, United StatesHQ checked Sep 19, 2026	501-1,000	1,570 contacts →
	Partial evidence “Power Digital is a growth marketing firm fueled by technology and driven by a talented team of consultative marketers, creatives, analysts and technologists.” Source: RevenueBase Database · checked Sep 19, 2026
15	Localiq	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 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 19, 2026
16	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
17	Hearts & Science	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 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 19, 2026
18	Birdeye	Partial evidence	Palo Alto, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,343 contacts →
	Partial evidence “Birdeye is the #1 Agentic Marketing Platform for Multi-location Brands, purpose-built for multi-location brands.” Source: RevenueBase Database · checked Sep 19, 2026
19	Concilig	Indirect evidence	Bauru, BrazilHQ checked Sep 19, 2026	5,001-10,000	1,279 contacts →
	Indirect evidence “A Concilig construiu uma reputação inquestionável com grandes empresas brasileiras por ser embasada por muita tecnologia e por eficácia na prestação de serviços que oferece.” Source: RevenueBase Database · checked Sep 19, 2026
20	Netcore	Strong evidence	Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	1,265 contacts →
	Strong evidence “Netcore offers a Comprehensive Customer Engagement & Experience Suite that empowers marketers to create personalised customer experiences.” Source: RevenueBase Database · checked Sep 19, 2026
21	Verticurl A WPP Company	Partial evidence	SingaporeHQ checked Sep 19, 2026	1,001-5,000	1,256 contacts →
	Partial 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 19, 2026
22	MCI	Indirect evidence	Geneva, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,229 contacts →
	Indirect evidence “The power of people united in purpose is unstoppable.” Source: RevenueBase Database · checked Sep 19, 2026
23	Dialog Direct	Strong evidence	Highland Park, MI, United StatesHQ checked Sep 19, 2026	10001+	1,138 contacts →
	Strong 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
24	Demandscience	Partial evidence	Boston, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,087 contacts →
	Partial 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 19, 2026
25	Insider	Partial evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	1,001-5,000	1,036 contacts →
	Partial evidence “Insider-one platform for individualized, cross-channel experiences-enables enterprise marketers to connect customer data across channels and systems, predict their future behavior…” 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 engagement marketing firms. 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 engagement marketing firms.
Partial evidence: Its own public description names part of customer engagement marketing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer engagement marketing firms. 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 42,959 customer engagement marketing firms worldwide

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Customer engagement marketing firms worldwide at a glance

As of Sep 19, 2026

21.7%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

2.2%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

28,960

11-50

11,034

51-200

2,117

201-500

503

501-1,000

140

1,001-5,000

123

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 engagement marketing firms, 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 engagement marketing firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer engagement marketing firms”. 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 engagement marketing firms), 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 engagement marketing firms, 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, 86,085 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 engagement marketing firms by location

169 lists · largest first

Every Customer engagement marketing 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 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 engagement marketing firms, 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 engagement marketing firms are there worldwide?

RevenueBase identified 42,959 customer engagement marketing firms 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?

QUAD, headquartered in Sussex, tops this list with the largest team on record.

Which country has the most customer engagement marketing firms?

The United States leads with 11,199 companies, followed by India (4,305) and the United Kingdom (2,570). Every customer engagement marketing firms list by country and city is linked on this page.

Which city has the most customer engagement marketing firms?

London leads with 925 headquartered companies, followed by New York (539) and Sao Paulo (466).

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 86,085 verified decision-maker contacts tracked across these 42,959 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.