Company lists · Data refreshed September 2026
Top 25 Customer advocacy firms worldwide
RevenueBase identified 1,276 customer advocacy firms worldwide as of September 2026 and tracks 82,100 professional contacts across them, including 8,920 with verified work emails. The United States is the largest market and London the largest hub.
This list covers customer advocacy 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 advocacy 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.
The 25 largest customer advocacy firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 47,558 contacts → | ||||
Partial evidence “We’re passionate about creating customers for life by designing experiences that elevate your brand.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 5,863 contacts → | ||||
Partial evidence “Everise delivers happiness to millions of customers around the world.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 5,840 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,101 contacts → | ||||
Partial evidence “Your customers are human.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,818 contacts → | ||||
Indirect evidence “We’re Australia’s leading specialists in CX consultancy and services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,379 contacts → | ||||
Indirect evidence “Associazione difesa consumatori” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 708 contacts → | ||||
Partial evidence “ClearSource at its core is a customer experience company.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 657 contacts → | ||||
Partial evidence “We are a trusted leader in providing integrated solutions, leveraging cutting-edge technology to deliver exceptional customer experiences.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 636 contacts → | ||||
Partial evidence “CUSTOMER EXPERIENCE.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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, 2026Thanks. The Data Team will review it. | |||||
| 11 | 610 contacts → | ||||
Partial evidence “Bond is the customer-intelligence driven engagement company.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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, 2026Thanks. The Data Team will review it. | |||||
| 13 | 431 contacts → | ||||
Partial evidence “At MaritzCX, a Press Ganey company, our mission is to help our clients improve experiences at the intersection of value-where customer, employee, and business needs come together.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 430 contacts → | ||||
Indirect evidence “Millennium1 Solutions is now NTT Business Process Outsourcing.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 312 contacts → | ||||
Indirect evidence “25+ years.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 300 contacts → | ||||
Indirect evidence “Um verdadeiro Centro de Experiências para nossos clientes.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 296 contacts → | ||||
Indirect evidence “Market Probe specializes in technology enabled business solutions that deliver Voice of Market Feedback to improve business operations.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 277 contacts → | ||||
Partial evidence “Gestiamo i tuoi Customer Decision Journey combinando competenze digitali con sensibilità umana.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 214 contacts → | ||||
Partial evidence “Hansa Direct – a part of Hansa Customer Equity, is a one-of-a-kind Customer Experience Centre backed by specialists across data, analytics, MarTech and digital.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 198 contacts → | ||||
Partial evidence “Ignition CX is the global leader in high performance customer acquisition and customer experience management.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 196 contacts → | ||||
Partial evidence “Merkle is a leading data-driven, technology-enabled, global customer experience management (CXM) company that specialises in the delivery of unique, personalised customer…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 182 contacts → | ||||
Indirect evidence “Apporteur de valeur ajoutée dans l'expérience client, nous intervenons sur l'ensemble de la chaîne de valeur.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 179 contacts → | ||||
Partial evidence “Bold Orange is a leading customer experience agency supporting brands with end-to-end CX needs, inclusive of experience strategy and design, performance marketing and digital…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 172 contacts → | ||||
Partial evidence “A boutique customer experience provider founded by industry veterans who share the belief that a customer centric approach is not only a differentiating strategy, but should be…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 169 contacts → | ||||
Partial evidence “DEFINITION 6 (now Bridgenext) is a customer experience agency that drives change with every production.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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 advocacy 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 advocacy firms.
- Partial evidence
- Its own public description names part of customer advocacy firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name customer advocacy 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 1,276 customer advocacy firms worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 8,920 reachable decision-makers.
Free signup · no credit card
Customer advocacy firms worldwide at a glance
As of Sep 19, 2026Companies by employee count
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 advocacy 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 advocacy firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “customer advocacy 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 advocacy 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 advocacy 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, 8,920 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 advocacy firms by location
9 lists · largest firstEvery Customer advocacy firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Customer advocacy firms based in the United States306
- Customer advocacy firms based in the United Kingdom116
- Customer advocacy firms based in Brazil72
- Customer advocacy firms based in Australia54
- Customer advocacy firms based in France50
- Customer advocacy firms based in the Netherlands50
- Customer advocacy firms based in Canada43
- Customer advocacy firms based in India40
- Customer advocacy firms based in Germany28
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 advocacy 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 advocacy firms are there worldwide?
RevenueBase identified 1,276 customer advocacy 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?
Alorica, headquartered in Irvine, tops this list with the largest team on record.
Which country has the most customer advocacy firms?
The United States leads with 306 companies, followed by the United Kingdom (116) and Brazil (72). Every customer advocacy firms list by country and city is linked on this page.
Which city has the most customer advocacy firms?
London leads with 45 headquartered companies, followed by Sao Paulo (31) and Paris (20).
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 8,920 verified decision-maker contacts tracked across these 1,276 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.
Ready to reach these companies? Verified emails and direct dials for all 1,276 customer advocacy firms worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.