Company lists · Data refreshed November 2026

Top 25 Engagement agencies worldwide

RevenueBase identified 145,483 company matches for engagement agencies worldwide as of November 2026 and tracks 2,020,133 professional contacts across them, including 360,009 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for 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 November 6, 2026. Country and city lists for 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 Nov 6, 2026 How this list was built
145,483Companies
2,020,133Contacts tracked
360,009Verified emails
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The 25 largest engagement agencies worldwide

Ranked by team size
Top 25 of 145,483 company matches for engagement agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchIrvine, CA, United StatesHQ recorded Nov 6, 202610001+56,404 contacts →

Exact match

“We’re passionate about creating customers for life by designing experiences that elevate your brand.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMiami, United StatesHQ recorded Nov 6, 202610001+37,460 contacts →

Exact match

“Foundever™ is a global leader in the customer experience (CX) industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMadrid, SpainHQ recorded Nov 6, 202610001+28,482 contacts →

Exact match

“Konecta is a leading innovative global service provider in customer management business process outsourcing, with passionate employees working in 40 languages across 4 continents…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBelo Horizonte, BrazilHQ recorded Nov 6, 202610001+22,678 contacts →

Exact match

“A AeC é apontada consistentemente como a líder brasileira na entrega de soluções de experiência do cliente e gestão de processos terceirizados.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchFort Lauderdale, FL, United StatesHQ recorded Nov 6, 202610001+20,762 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchParis, FranceHQ recorded Nov 6, 202610001+20,192 contacts →

Exact match

“Founded in 1926 by Marcel Bleustein-Blanchet, today Publicis Groupe is one of the largest communications groups in the world and a leader in marketing, communication, and digital…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202610001+17,868 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchDenver, United StatesHQ recorded Nov 6, 202610001+16,728 contacts →

Exact match

“A global customer experience (CX) management solutions provider, Startek® delivers best-in-class omnichannel CX, digital transformation and enterprise tech services for leading…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSingaporeHQ recorded Nov 6, 202610001+15,584 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 202610001+12,431 contacts →

Exact match

“Acosta brings simplicity to retail sales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWinnipeg, MB, CanadaHQ recorded Nov 6, 202610001+10,812 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 · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCorsico, ItalyHQ recorded Nov 6, 202610001+10,448 contacts →

Exact match

“We're KONECTA now!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchUberlândia, BrazilHQ recorded Nov 6, 20265,001-10,0008,826 contacts →

Exact match

“Somos a Algar Tech CX.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 6, 2026n/a7,965 contacts →

Exact match

“Clinic is an independent creative agency.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNoida, IndiaHQ recorded Nov 6, 202610001+7,713 contacts →

Exact match

“We are an end-to-end Customer Experience (CX) solutions provider offering omni-channel solutions along various customer interaction touch-points from customer sales and support…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPlantation, United StatesHQ recorded Nov 6, 202610001+6,919 contacts →

Exact match

“Everise delivers happiness to millions of customers around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBeyoglu, TürkiyeHQ recorded Nov 6, 202610001+6,889 contacts →

Exact match

“Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchHighland Park, TX, United StatesHQ recorded Nov 6, 202610001+6,719 contacts →

Exact match

“Qualfon provides 360 degrees of customer experience support for your business with mission-driven processes that keep each person at the heart of every interaction.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBloomington, United StatesHQ recorded Nov 6, 202610001+6,716 contacts →

Exact match

“When people reach for their phones, use laptops, or grab their tablets, Afni's contact center teams are there to provide prompt and friendly help.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMedellín, ColombiaHQ recorded Nov 6, 202610001+6,207 contacts →

Exact match

“Maximizamos el valor de cada contacto de las empresas con sus clientes, gestionando los procesos de relacionamiento a través de canales tefónicos, virtuales y presenciales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNorcross, QC, United StatesHQ recorded Nov 6, 202610001+5,260 contacts →

Exact match

“At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchDallas, TX, United StatesHQ recorded Nov 6, 20265,001-10,0004,798 contacts →

Exact match

“With a fresh name and decades of contact center expertise, we’re dedicated to collaborative partnerships, understanding your unique needs, and tailoring solutions for an enhanced…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBauru, BrazilHQ recorded Nov 6, 202610001+4,738 contacts →

Exact match

“Somos um ecossistema de soluções em outsourcing, especialistas em cobrança e atendimento.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchColumbia, MD, United StatesHQ recorded Nov 6, 202610001+4,725 contacts →

Exact match

“Merkle, a dentsu company, powers the experience economy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchKarachi, PakistanHQ recorded Nov 6, 202610001+4,555 contacts →

Exact match

“ibex.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 145,483 engagement agencies worldwide

See the full list, filter by size, metro and specialty, and access 360,009 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Engagement agencies worldwide at a glance

As of Nov 6, 2026
17.8%Verified-email coverage
13.9Average contacts per company
1-10Median size (employees)
3.2%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
94,204
11-50
39,258
51-200
8,032
201-500
2,029
501-1,000
660
1,001-5,000
625
5,001-10,000
128
10001+
176

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 engagement agencies are linked below.
What qualifies
Company records worldwide whose business descriptions match “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 360,009 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 November 6, 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.

Engagement agencies by location

515 lists · largest first

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

How many engagement agencies are there worldwide?

RevenueBase identified 145,483 company matches for engagement agencies worldwide as of November 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?

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

Which country has the most engagement agencies?

The United States leads with 22,883 companies, followed by the United Kingdom (10,964) and India (10,770). Every engagement agencies list by country and city is linked on this page.

Which city has the most engagement agencies?

London leads with 4605 company records, followed by Sao Paulo (2527) and New York (2216).

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 360,009 professional contacts with verified work emails tracked across these 145,483 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 November 6, 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.