Company lists · Data refreshed September 2026

Top 25 Customer engagement agencies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 40,180 companies tracked

RevenueBase identified 40,180 company matches for customer engagement agencies worldwide as of September 2026 and tracks 712,444 professional contacts across them, including 160,877 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for customer engagement agencies 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 September 19, 2026. Country and city lists for customer engagement agencies 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 Sep 19, 2026 How this list was built

40,180Companies

712,444Contacts tracked

160,877Verified emails

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The 25 largest customer engagement agencies worldwide

Ranked by team size

Top 25 of 40,180 company matches for customer engagement agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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	IQOR	Exact match	Fort Lauderdale, FL, United StatesHQ recorded Sep 19, 2026	10001+	17,310 contacts →
	Exact match “iQor is a trusted partner in customer experience solutions for global brands and a portfolio company of Mill Point Capital.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	IBEX	Exact match	Washington, DC, United StatesHQ recorded Sep 19, 2026	10001+	15,457 contacts →
	Exact match “ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	VML	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	10001+	15,338 contacts →
	Exact match “VML is a global powerhouse born from the unification of Wunderman Thompson and VMLY & R, two of the world's most powerful and accomplished creative agencies with complementary…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	TDCX	Exact match	SingaporeHQ recorded Sep 19, 2026	10001+	13,640 contacts →
	Exact match “Singapore-headquartered TDCX provides transformative digital CX solutions, enabling world-leading and disruptive brands to acquire new customers, to build customer loyalty, and to…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Acosta	Exact match	Jacksonville, FL, United StatesHQ recorded Sep 19, 2026	10001+	11,521 contacts →
	Exact match “Acosta brings simplicity to retail sales.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	QUAD	Exact match	Sussex, WI, United StatesHQ recorded Sep 19, 2026	10001+	9,567 contacts →
	Exact match “Quad (NYSE: QUAD) is a global marketing experience company that helps brands make direct consumer connections, from household to in-store to online.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Intouchcx	Exact match	Winnipeg, MB, CanadaHQ recorded Sep 19, 2026	10001+	8,992 contacts →
	Exact match “We are IntouchCX, where innovation meets industry, where dreamers meet doers, and where scale meets soul.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Clinic	Exact match	London, United KingdomHQ recorded Sep 19, 2026	n/a	5,287 contacts →
	Exact match “Clinic is an independent creative agency.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	V4 Company	Exact match	Campinas, BrazilHQ recorded Sep 19, 2026	1,001-5,000	5,079 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Fusion CX	Exact match	Norcross, GA, United StatesHQ recorded Sep 19, 2026	10001+	4,785 contacts →
	Exact match “At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Merkle	Exact match	Columbia, MD, United StatesHQ recorded Sep 19, 2026	10001+	4,731 contacts →
	Exact match “Merkle, a dentsu company, powers the experience economy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Ibex. Pakistan	Exact match	Karachi, PakistanHQ recorded Sep 19, 2026	10001+	4,161 contacts →
	Exact match “ibex.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Harte Hanks	Exact match	Chelmsford, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	3,901 contacts →
	Exact match “We are The Customer Company®, a global leader in Customer Experience (CX), Omnichannel Marketing, Data Services, Customer Care, Fulfillment, and Logistics.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	PT Vads Indonesia	Exact match	Jakarta Selatan, IndonesiaHQ recorded Sep 19, 2026	1,001-5,000	3,602 contacts →
	Exact match “The Client's Chosen Partner In The Digital Customer Experience Management #MakeBusinessEasier” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Armatis	Exact match	Paris, FranceHQ recorded Sep 19, 2026	5,001-10,000	3,545 contacts →
	Exact match “For 40 years, Armatis, European expert in customer relationship and process outsourcing, has been transforming brands' ambitions into tangible and measurable results.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Dunnhumby	Exact match	Brook Green, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,857 contacts →
	Exact match “dunnhumby helps businesses grow through faster, better decision making, as the essential intelligence layer connecting the world’s leading retailers and brands.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Klaviyo	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,789 contacts →
	Exact match “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Digitas North America	Exact match	Boston, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,654 contacts →
	Exact match “Digitas is the Networked Experience Agency, built on the vision that we create magnetic experiences that earn the right for brands to exist in human networks.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	MRM	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,627 contacts →
	Exact match “MRM is a modern relationship marketing agency that builds enduring brand relationships.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	2020 Companies	Exact match	Southlake, TX, United StatesHQ recorded Sep 19, 2026	10001+	2,463 contacts →
	Exact match “2020 Companies is an award-winning retail sales, merchandising, and experiential marketing agency headquartered in Southlake, TX.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Iprospect	Exact match	London, United KingdomHQ recorded Sep 19, 2026	5,001-10,000	2,366 contacts →
	Exact match “iProspect, a dentsu company, is a leading global digital-first media agency.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Assembly Global	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,313 contacts →
	Exact match “Assembly is a global omnichannel agency built for brands that want a more modern approach to building brands that perform.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	DDB	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	5,001-10,000	2,190 contacts →
	Exact match “The birthplace of the creative revolution, DDB is built on the belief that emotional advantage creates business advantage.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Marketing Werks	Exact match	Chicago, IL, United StatesHQ recorded Sep 19, 2026	n/a	2,182 contacts →
	Exact match “Marketing Werks has become Product Connections, a fully integrated engagement agency specializing in omnichannel solutions that build relationships between brands and consumers.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	BRAZE	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,142 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 19, 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 “customer engagement agencies”. 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 40,180 customer engagement agencies worldwide

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Customer engagement agencies worldwide at a glance

As of Sep 19, 2026

22.6%Verified-email coverage

17.7Average contacts per company

1-10Median size (employees)

3.1%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

23,484

11-50

12,565

51-200

2,854

201-500

715

501-1,000

206

1,001-5,000

224

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 customer engagement agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “customer engagement agencies” 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 160,877 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 September 19, 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.

Customer engagement agencies by location

167 lists · largest first

Every Customer engagement 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 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 “customer engagement agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer engagement agencies are there worldwide?

RevenueBase identified 40,180 company matches for customer engagement agencies worldwide as of September 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?

IQOR tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most customer engagement agencies?

The United States leads with 7,794 companies, followed by India (3,441) and the United Kingdom (2,891). Every customer engagement agencies list by country and city is linked on this page.

Which city has the most customer engagement agencies?

London leads with 1230 company records, followed by Sao Paulo (738) and New York (615).

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 160,877 professional contacts with verified work emails tracked across these 40,180 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 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 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.