Company lists · Data refreshed November 2026

Top 25 Unified messaging platforms based in the United States

RevenueBase identified 447 company matches for unified messaging platforms associated with the United States as of November 2026 and tracks 9,791 professional contacts across them, including 3,455 with verified work emails. San Francisco is the largest hub.

This list covers company matches for unified messaging platforms 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 November 5, 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 Nov 5, 2026 How this list was built
447Companies
9,791Contacts tracked
3,455Verified emails
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The 25 largest unified messaging platforms based in the United States

Ranked by team size
Top 25 of 447 company matches for unified messaging platforms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchConway, AR, United StatesHQ recorded Nov 5, 2026501-1,000512 contacts →

Exact match

“Acoustic, L.P.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchPortland, OR, United StatesHQ recorded Nov 5, 2026201-500511 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchChicago, IL, United StatesHQ recorded Nov 5, 2026501-1,000326 contacts →

Exact match

“We've moved pages.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchSan Mateo, CA, United StatesHQ recorded Nov 5, 2026201-500310 contacts →

Exact match

“Sendbird is the AI customer experience company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchSan Mateo, CA, United StatesHQ recorded Nov 5, 2026201-500300 contacts →

Exact match

“Netomi is the enterprise agentic CX platform built for the world's most complex environments.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchHerndon, VA, United StatesHQ recorded Nov 5, 202651-200281 contacts →

Exact match

“Ultatel delivers a powerful yet easy-to-use cloud communications suite that scales with your business-combining voice, SMS, chat, video, online fax, and contact center…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchAlpharetta, GA, United StatesHQ recorded Nov 5, 202651-200266 contacts →

Exact match

“We solve a critical gap businesses face with employee to client communication, over voice and messaging.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 2026201-500255 contacts →

Exact match

“The Firstup Intelligent Communication Platform equips organizations to improve productivity, retention, labor efficiency, safety compliance, and revenue performance by activating…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 2026n/a254 contacts →

Exact match

“Courier is the customer messaging and notifications platform where your team and AI agents collaborate.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202651-200200 contacts →

Exact match

“LeapXpert is the leader in Governed Communication Intelligence.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchSan Mateo, CA, United StatesHQ recorded Nov 5, 202651-200198 contacts →

Exact match

“OneSignal is the leading customer engagement platform for push, email, SMS/RCS, and in-app messaging.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchMiami, FL, United StatesHQ recorded Nov 5, 202651-200196 contacts →

Exact match

“Botmaker is the most advanced conversational platform that allows you to give smart and fast answers to your customers in all digital channels.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchSunnyvale, CA, United StatesHQ recorded Nov 5, 202651-200170 contacts →

Exact match

“Zultys is a premier provider of omnichannel, Unified Communications, hosted business phone services and premise-based communications systems.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchAustin, TX, United StatesHQ recorded Nov 5, 202651-200153 contacts →

Exact match

“Close is the sales CRM built for founders, startups, and small businesses that want to grow faster.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchMinneapolis, MN, United StatesHQ recorded Nov 5, 202651-200141 contacts →

Exact match

“Kipsu is pioneering a software-based solution designed to revolutionize how service-driven brands interact with consumers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchLas Vegas, NV, United StatesHQ recorded Nov 5, 2026201-500140 contacts →

Exact match

“tawk.to makes it easy for over six million people to communicate and transact with billions of customers, no matter where they are or how they pay.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchLa Palma, CA, United StatesHQ recorded Nov 5, 202651-200113 contacts →

Exact match

“Trum·pia was founded in 2006 and has long been ranked #1 in SMS marketing by Forbes because of our ease-of-use, prompt support, and one-of-a-kind automation that scales your…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 2026201-500112 contacts →

Exact match

“Founded in 2003, Demandforce helps small businesses thrive in the Internet economy.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchBirmingham, AL, United StatesHQ recorded Nov 5, 202611-5089 contacts →

Exact match

“Linq is the infrastructure to build AI agents in iMessage, covering a suite of enterprise-ready APIs for iMessage, SMS, RCS and voice channels, built for engineers and product…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchBloomington, IL, United StatesHQ recorded Nov 5, 202611-5077 contacts →

Exact match

“Business Class Team Texting to help Sales and Service Teams!”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchSanta Monica, CA, United StatesHQ recorded Nov 5, 202651-20075 contacts →

Exact match

“Community helps marketing teams build trust, loyalty, and long-term customer value through personalized, two-way conversations with their audiences.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchFrisco, TX, United StatesHQ recorded Nov 5, 202611-5061 contacts →

Exact match

“Text-Em-All is an SMS marketing platform that helps organizations connect with their audiences through clear, personal, and responsible messaging.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchSunnyvale, CA, United StatesHQ recorded Nov 5, 202611-5059 contacts →

Exact match

“2600Hz modernizes the way businesses communicate with KAZOO-a cloud-based unified communications solution.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202611-5057 contacts →

Exact match

“Conversation builds relationship.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchDenver, CO, United StatesHQ recorded Nov 5, 202651-20056 contacts →

Exact match

“TextUs is business texting software that increases engagement with prospects, customers, workers, and candidates resulting in substantial gains in pipeline and productivity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 447 unified messaging platforms based in the United States

See the full list, filter by size, metro and specialty, and access 3,455 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Unified messaging platforms based in the United States at a glance

As of Nov 5, 2026
35.3%Verified-email coverage
21.9Average contacts per company
11-50Median size (employees)
7.6%Largest-city concentration · San Francisco
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
170
11-50
186
51-200
65
201-500
19
501-1,000
5
1,001-5,000
1
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 447 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 “unified messaging platforms” 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 3,455 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 5, 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 “unified messaging platforms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many unified messaging platforms are there based in the United States?

RevenueBase identified 447 company matches for unified messaging platforms associated with the United States 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?

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

Which city has the most unified messaging platforms?

San Francisco leads with 34 company records, followed by New York (29) and Miami (12).

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 3,455 professional contacts with verified work emails tracked across these 447 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 5, 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.