Company lists · Data refreshed November 2026

Top 25 Unified messaging companies worldwide

RevenueBase identified 568 company matches for unified messaging companies worldwide as of November 2026 and tracks 21,211 professional contacts across them, including 8,465 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for unified messaging companies 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 unified messaging companies 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
568Companies
21,211Contacts tracked
8,465Verified emails
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The 25 largest unified messaging companies worldwide

Ranked by team size
Top 25 of 568 company matches for unified messaging companies 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 matchBelmont, United StatesHQ recorded Nov 6, 20265,001-10,0006,795 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchStockholm, SwedenHQ recorded Nov 6, 20261,001-5,0003,132 contacts →

Exact match

“Sinch’s vision is to connect every business with every customer, everywhere in the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchRaleigh, United StatesHQ recorded Nov 6, 20261,001-5,0001,199 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchVancouver, WA, United StatesHQ recorded Nov 6, 2026501-1,0001,123 contacts →

Exact match

“Integra is Allstream.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchPleasant Grove, UT, United StatesHQ recorded Nov 6, 2026501-1,000685 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMunich, GermanyHQ recorded Nov 6, 2026201-500339 contacts →

Exact match

“Digital transformation is changing processes and supply chains, products and companies, entire industries and markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNoida, IndiaHQ recorded Nov 6, 2026201-500317 contacts →

Exact match

“Onextel Limited is a leading business communications solutions platform that enables brands to build connected customer experiences, with a core focus on integrated…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchGurgaon, IndiaHQ recorded Nov 6, 2026201-500283 contacts →

Exact match

“Established in 2015, Smartping is a leading enterprise and telecommunications service provider, revolutionizing how pan-India businesses connect and engage with their audiences…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHerndon, VA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
10Exact matchAlpharetta, GA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
11Exact matchMiguel Hidalgo, MexicoHQ recorded Nov 6, 202651-200198 contacts →

Exact match

“Auronix is a communications platform as a service (CPaaS) provider based in Mexico City.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHyderabad, IndiaHQ recorded Nov 6, 2026201-500186 contacts →

Exact match

“Our mission is to create meaningful experiences by unifying teams, customers & businesses, at scale.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSunnyvale, CA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
14Exact matchMumbai, IndiaHQ recorded Nov 6, 202651-200167 contacts →

Exact match

“DOVE SOFT, based in Mumbai and founded in 2009, provides Integrated Cloud Communications Solutions across SMS, Voice, and Email.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWaterloo, NJ, CanadaHQ recorded Nov 6, 2026501-1,000163 contacts →

Exact match

“EasyLink Services, a wholly owned subsidiary of OpenText, offers a comprehensive portfolio of “any to any” cloud-based messaging and transaction services that can bridge the most…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPoznań, PolandHQ recorded Nov 6, 2026201-50090 contacts →

Exact match

“Since 2005, we have been developing global cloud communications platforms CPaaS that empower companies to build and grow lasting relationships with their audiences across multiple…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBirmingham, AL, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
18Exact matchBangalore, IndiaHQ recorded Nov 6, 2026501-1,00087 contacts →

Exact match

“Solutions Infini, now Kaleyra, is a global group providing mobile communication services to financial institutions, e-commerce players, OTTs, software companies, logistic…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchDallas, TX, United StatesHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“46 Labs is a global business communications company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSantiago, ChileHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“En InteliData impulsamos la rentabilidad y reducimos sus costos de oportunidad mediante la producción de comunicaciones multicanal y personalizadas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMontréal, DE, CanadaHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“Cloudli is a leading provider of next generation voice, messaging, and data communications solutions for businesses and consumers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchWarsaw, PolandHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Tide Software would like to help to gain new clients and support them.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBridgewater, NJ, United StatesHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“From around the corner, to around the globe, COA Network delivers the tools and technology that makes building and managing your business easier.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSunderland, United KingdomHQ recorded Nov 6, 2026n/a61 contacts →

Exact match

“Established in 1995, Cellular Solutions NE, now part of Communications Plus, is a trusted business telecoms provider supporting organisations across the North East and throughout…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSunnyvale, CA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase

Showing 25 of 568 unified messaging companies worldwide

See the full list, filter by size, metro and specialty, and access 8,465 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Unified messaging companies worldwide at a glance

As of Nov 6, 2026
39.9%Verified-email coverage
37.3Average contacts per company
11-50Median size (employees)
2.8%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
210
11-50
243
51-200
74
201-500
25
501-1,000
9
1,001-5,000
4
5,001-10,000
1
10001+
1

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 unified messaging companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “unified messaging 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. 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 8,465 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.

Unified messaging companies by location

3 lists · largest first

Every Unified messaging companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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

How many unified messaging companies are there worldwide?

RevenueBase identified 568 company matches for unified messaging companies 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?

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

Which country has the most unified messaging companies?

The United States leads with 163 companies, followed by India (42) and the United Kingdom (33). Every unified messaging companies list by country and city is linked on this page.

Which city has the most unified messaging companies?

London leads with 16 company records, followed by Bangalore (9) and Wilmington (6).

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 8,465 professional contacts with verified work emails tracked across these 568 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.