Company lists · Data refreshed September 2026

Top 25 Customer communication platform companies based in the United States

RevenueBase identified 631 company matches for customer communication platform companies associated with the United States as of September 2026 and tracks 43,724 professional contacts across them, including 19,109 with verified work emails. San Francisco is the largest hub.

This list covers company matches for customer communication platform companies associated with the United States, 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 28, 2026.

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 28, 2026 How this list was built
631Companies
43,724Contacts tracked
19,109Verified emails
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The 25 largest customer communication platform companies based in the United States

Ranked by team size
Top 25 of 631 company matches for customer communication platform companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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 matchBelmont, CA, United StatesHQ recorded Sep 28, 20265,001-10,0006,431 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20265,001-10,0006,047 contacts →

Exact match

“Today's leading companies trust Twilio's Customer Engagement Platform (CEP) to build direct, personalized relationships with their customers everywhere in the world.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchBoston, MA, United StatesHQ recorded Sep 28, 20261,001-5,0002,789 contacts →

Exact match

“Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchCampbell, CA, United StatesHQ recorded Sep 28, 20261,001-5,0002,444 contacts →

Exact match

“8x8, Inc.(NASDAQ: EGHT) believes that CX limits were meant to be shattered.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchScottsdale, AZ, United StatesHQ recorded Sep 28, 20261,001-5,0001,638 contacts →

Exact match

“Build amazing customer experiences with Nextiva’s AI-powered platform.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchSan Ramon, CA, United StatesHQ recorded Sep 28, 20261,001-5,0001,473 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchNew York, United StatesHQ recorded Sep 28, 20261,001-5,0001,287 contacts →

Exact match

“Attentive® knows personalized customer experiences require both powerful technology and the right people behind it.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchRaleigh, NC, United StatesHQ recorded Sep 28, 20261,001-5,0001,128 contacts →

Exact match

“Bandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchNew York, NY, United StatesHQ recorded Sep 28, 2026501-1,000804 contacts →

Exact match

“The collaborative, AI-powered platform for customer conversations.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchAustin, TX, United StatesHQ recorded Sep 28, 2026501-1,000763 contacts →

Exact match

“Khoros' award-winning enterprise software makes it easier for complex brands to engage with customers at scale across digital, social, and brand-owned channels.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 2026501-1,000702 contacts →

Exact match

“CleverTap is the leading all-in-one customer engagement platform that helps brands unlock limitless customer lifetime value.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchPleasant Grove, UT, United StatesHQ recorded Sep 28, 2026501-1,000606 contacts →

Exact match

“Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchChicago, IL, United StatesHQ recorded Sep 28, 202651-200567 contacts →

Exact match

“Call Center Studio is an AI-powered, cloud-based contact center software that redefines how businesses engage with their customers.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchConway, AR, United StatesHQ recorded Sep 28, 2026501-1,000539 contacts →

Exact match

“Acoustic, L.P.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchNew York, NY, United StatesHQ recorded Sep 28, 2026201-500490 contacts →

Exact match

“Symphony is an AI-powered communication and technology company fueled by interconnected platforms: Messaging, Voice, Directory and Analytics.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchPalo Alto, CA, United StatesHQ recorded Sep 28, 2026201-500448 contacts →

Exact match

“SaaS Labs is all about helping sales and support teams reach their full potential.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchPortland, OR, United StatesHQ recorded Sep 28, 2026201-500446 contacts →

Exact match

“Create personalized customer journeys that engage and convert with our versatile customer engagement platform.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchTroy, MI, United StatesHQ recorded Sep 28, 2026501-1,000436 contacts →

Exact match

“Doxim is the customer communications management and engagement technology leader serving highly regulated markets, including financial services, utilities and healthcare.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 2026501-1,000430 contacts →

Exact match

“Front is the customer operations platform built for B2B complexity, keeping every team, tool, and customer conversation in sync so companies can scale without losing connection.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchLos Angeles, CA, United StatesHQ recorded Sep 28, 2026201-500421 contacts →

Exact match

“O’Neil Digital Solutions is a customer communication management (CCM) and CX technology provider serving healthcare and financial services organizations, specializing in…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchChicago, IL, United StatesHQ recorded Sep 28, 2026501-1,000327 contacts →

Exact match

“We've moved pages.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchFort Lauderdale, FL, United StatesHQ recorded Sep 28, 20261,001-5,000301 contacts →

Exact match

“OutPLEX is a leading international digital and voice customer contact management services organization developing solutions for the world's most trusted brands.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchSan Mateo, CA, United StatesHQ recorded Sep 28, 2026201-500297 contacts →

Exact match

“Sendbird is the AI customer experience company.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchCarol Stream, IL, United StatesHQ recorded Sep 28, 2026501-1,000295 contacts →

Exact match

“OSG delivers leading Customer Communications Management (CCM) solutions providing multichannel communications that drive customer engagement.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 2026501-1,000294 contacts →

Exact match

“Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experiences.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 631 customer communication platform companies based in the United States

See the full list, filter by size, metro and specialty, and access 19,109 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Customer communication platform companies based in the United States at a glance

As of Sep 28, 2026
43.7%Verified-email coverage
69.3Average contacts per company
11-50Median size (employees)
7.9%Largest-city concentration · San Francisco
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
206
11-50
250
51-200
109
201-500
33
501-1,000
17
1,001-5,000
13
5,001-10,000
2
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 631 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “customer communication platform companies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 19,109 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 28, 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.

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 communication platform companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer communication platform companies are there based in the United States?

RevenueBase identified 631 company matches for customer communication platform companies associated with the United States 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?

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

Which city has the most customer communication platform companies?

San Francisco leads with 50 company records, followed by New York (42) and Miami (25).

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 19,109 professional contacts with verified work emails tracked across these 631 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 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 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.