Company lists · Data refreshed September 2026

Top 25 Customer communication platform companies worldwide

Name: Customer communication platform companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,471 companies tracked

RevenueBase identified 3,471 customer communication platform companies worldwide as of September 2026 and tracks 114,721 professional contacts across them, including 40,604 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers customer communication platform companies 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 28, 2026. Country and city lists for customer communication platform companies 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 28, 2026 86% judged on-target in blind review

3,471Companies

114,721Contacts tracked

40,604Verified emails

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The 25 largest customer communication platform companies worldwide

Ranked by team size

Top 25 of 3,471 customer communication platform companies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to customer communication platform companies: 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	Ringcentral	Strong evidence	Belmont, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,431 contacts →
	Strong evidence “RingCentral, Inc.(NYSE: RNG) is a global leader in AI–powered customer engagement, delivering an integrated platform for business phone, SMS, contact center, workforce engagement…” Source: RevenueBase Database · checked Sep 28, 2026
2	Twilio	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,047 contacts →
	Strong evidence “Today's leading companies trust Twilio's Customer Engagement Platform (CEP) to build direct, personalized relationships with their customers everywhere in the world.” Source: RevenueBase Database · checked Sep 28, 2026
3	Infobip	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	3,309 contacts →
	Partial evidence “Infobip is a global leader in omnichannel engagement powering a broad range of messaging channels, tools and solutions for advanced customer engagement, authentication and…” Source: RevenueBase Database · checked Sep 28, 2026
4	SINCH	Partial evidence	Stockholm, SwedenHQ checked Sep 28, 2026	1,001-5,000	2,934 contacts →
	Partial evidence “Sinch’s vision is to connect every business with every customer, everywhere in the world.” Source: RevenueBase Database · checked Sep 28, 2026
5	Klaviyo	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,789 contacts →
	Indirect evidence “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Source: RevenueBase Database · checked Sep 28, 2026
6	8x8	Indirect evidence	Campbell, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,444 contacts →
	Indirect evidence “8x8, Inc.(NASDAQ: EGHT) believes that CX limits were meant to be shattered.” Source: RevenueBase Database · checked Sep 28, 2026
7	Actionline	Partial evidence	Sao Paulo, BrazilHQ checked Sep 28, 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 28, 2026
8	Nextiva	Strong evidence	Scottsdale, AZ, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,638 contacts →
	Strong evidence “Build amazing customer experiences with Nextiva’s AI-powered platform.” Source: RevenueBase Database · checked Sep 28, 2026
9	Dialpad	Strong evidence	San Ramon, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,473 contacts →
	Strong evidence “Dialpad is the leading AI-powered communications intelligence platform creating human-first, AI-enhanced solutions that will drive the next wave of how businesses communicate with…” Source: RevenueBase Database · checked Sep 28, 2026
10	DBM Contact Center	Indirect evidence	Curitiba, BrazilHQ checked Sep 28, 2026	1,001-5,000	1,312 contacts →
	Indirect evidence “A dbm Contact Center foi fundada em 1996 e possui sede própria em Curitiba.” Source: RevenueBase Database · checked Sep 28, 2026
11	Attentive	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,287 contacts →
	Partial evidence “Attentive® knows personalized customer experiences require both powerful technology and the right people behind it.” Source: RevenueBase Database · checked Sep 28, 2026
12	Netcore	Partial evidence	Mumbai, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,265 contacts →
	Partial evidence “Netcore offers a Comprehensive Customer Engagement & Experience Suite that empowers marketers to create personalised customer experiences.” Source: RevenueBase Database · checked Sep 28, 2026
13	Bandwidth INC	Strong evidence	Raleigh, NC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,128 contacts →
	Strong evidence “Bandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences.” Source: RevenueBase Database · checked Sep 28, 2026
14	Emarsys	Partial evidence	Vienna, GermanyHQ checked Sep 28, 2026	501-1,000	831 contacts →
	Partial evidence “SAP Engagement Cloud (formerly SAP Emarsys) helps organizations power unique engagement by connecting real-time customer insights with the operational signals that run the…” Source: RevenueBase Database · checked Sep 28, 2026
15	Mundiale	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 28, 2026	501-1,000	813 contacts →
	Indirect evidence “Inteligência Artificial que entende seu negócio: Atendimento, vendas e cobrança pelo WhatsApp para escalar seus resultados.” Source: RevenueBase Database · checked Sep 28, 2026
16	Aircall	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	804 contacts →
	Strong evidence “The collaborative, AI-powered platform for customer conversations.” Source: RevenueBase Database · checked Sep 28, 2026
17	Zenvia	Partial evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	501-1,000	787 contacts →
	Partial evidence “Proporcione experiências pessoais, envolventes e fluidas com o poder de Zenvia Customer Cloud, nossa IA completa que revolucionará a jornada dos seus clientes.” Source: RevenueBase Database · checked Sep 28, 2026
18	BREVO	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	501-1,000	781 contacts →
	Strong evidence “Brevo offers the most intuitive Customer Platform for the sustainable growth of all businesses and organizations (including nonprofits).” Source: RevenueBase Database · checked Sep 28, 2026
19	Khoros	Partial evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	501-1,000	763 contacts →
	Partial evidence “Khoros' award-winning enterprise software makes it easier for complex brands to engage with customers at scale across digital, social, and brand-owned channels.” Source: RevenueBase Database · checked Sep 28, 2026
20	cm.com	Strong evidence	Breda, NetherlandsHQ checked Sep 28, 2026	1,001-5,000	705 contacts →
	Strong evidence “CM.com (AMS: CMCOM) is a leading European technology company that helps organizations worldwide improve customer interactions through integrated solutions for communications…” Source: RevenueBase Database · checked Sep 28, 2026
21	Clevertap	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	501-1,000	702 contacts →
	Strong evidence “CleverTap is the leading all-in-one customer engagement platform that helps brands unlock limitless customer lifetime value.” Source: RevenueBase Database · checked Sep 28, 2026
22	Tanla Platforms Limited	Strong evidence	Hyderabad, IndiaHQ checked Sep 28, 2026	1,001-5,000	700 contacts →
	Strong evidence “Through Tanla Platforms Limited's cloud communications technology, over global enterprises deliver billions of critical customer interactions daily – from vital banking alerts to…” Source: RevenueBase Database · checked Sep 28, 2026
23	Exotel	Partial evidence	Bangalore, IndiaHQ checked Sep 28, 2026	1,001-5,000	691 contacts →
	Partial evidence “Exotel is your AI transformation partner for customer engagement and experience.” Source: RevenueBase Database · checked Sep 28, 2026
24	Route Mobile Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 28, 2026	501-1,000	611 contacts →
	Partial evidence “Route Mobile began as an idea in 2004, founded by our Managing Director, Mr Rajdip Gupta – to bring about digital disruption in communication with simplified solutions that…” Source: RevenueBase Database · checked Sep 28, 2026
25	Alianza	Partial evidence	Pleasant Grove, UT, United StatesHQ checked Sep 28, 2026	501-1,000	606 contacts →
	Partial evidence “Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.” Source: RevenueBase Database · checked Sep 28, 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 communication platform companies. 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 communication platform companies.
Partial evidence: Its own public description names part of customer communication platform companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer communication platform companies. 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 3,471 customer communication platform companies worldwide

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Customer communication platform companies worldwide at a glance

As of Sep 28, 2026

35.4%Verified-email coverage

33.1Average contacts per company

11-50Median size (employees)

2.8%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,388

11-50

1,297

51-200

513

201-500

159

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 communication platform companies, 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 communication platform companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer communication platform companies”. 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 communication platform companies), 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 communication platform companies, 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, 40,604 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 28, 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 communication platform companies by location

32 lists · largest first

Every Customer communication platform companies 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 communication platform companies, 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 communication platform companies are there worldwide?

RevenueBase identified 3,471 customer communication platform companies 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?

Ringcentral, headquartered in Belmont, tops this list with the largest team on record.

Which country has the most customer communication platform companies?

The United States leads with 631 companies, followed by India (351) and Brazil (339). Every customer communication platform companies list by country and city is linked on this page.

Which city has the most customer communication platform companies?

Sao Paulo leads with 96 headquartered companies, followed by London (74) and San Francisco (50).

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 40,604 verified decision-maker contacts tracked across these 3,471 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 28, 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.