Company lists · Data refreshed September 2026

Top 25 Enterprise messaging solutions based in the United States

Name: Enterprise messaging solutions based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 105 companies tracked

RevenueBase identified 105 enterprise messaging solutions headquartered in the United States as of September 2026 and tracks 1,604 professional contacts across them, including 381 with verified work emails and 388 with mobile numbers. San Francisco is the largest hub.

This list covers enterprise messaging solutions headquartered in the United States, 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 2, 2026.

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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

105Companies

1,604Contacts tracked

381Verified emails

388Mobile numbers

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The 25 largest enterprise messaging solutions based in the United States

Ranked by team size

Top 25 of 105 enterprise messaging solutions based in the United States, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise messaging solutions: 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	Jive Software	Partial evidence	Austin, TX, United States	501-1,000	165 contacts →
	Partial evidence “Jive is the leading provider of modern communication and collaboration solutions for business.” Source: RevenueBase Database · checked Sep 2, 2026
2	Mattermost	Indirect evidence	Palo Alto, CA, United States	51-200	149 contacts →
	Indirect evidence “Mattermost is the leading collaboration platform for mission-critical work.” Source: RevenueBase Database · checked Sep 2, 2026
3	Easylink Services	Partial evidence	Tinton Falls, NJ, United States	501-1,000	145 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 2, 2026
4	Fuze An 8x8 Company	Partial evidence	Boston, MA, United States	501-1,000	103 contacts →
	Partial evidence “Fuze is a global cloud communications and collaboration software platform for the enterprise that was acquired by 8x8.” Source: RevenueBase Database · checked Sep 2, 2026
5	Netfortris, A Sangoma Company	Strong evidence	Seattle, WA, United States	201-500	75 contacts →
	Strong evidence “Established more than 20 years ago, NetFortris has grown to become the leading provider of secure cloud communication solutions to forward-thinking, mid-sized and enterprise…” Source: RevenueBase Database · checked Sep 2, 2026
6	MIO	Strong evidence	Austin, TX, United States	11-50	74 contacts →
	Strong evidence “Mio is a secure middleware that unlocks cross-platform messaging, file sharing, and meeting initiation for enterprise organizations that use Google Workspace and Microsoft 365…” Source: RevenueBase Database · checked Sep 2, 2026
7	Telemessage, A Smarsh Company	Partial evidence	Acton, MA, United States	1,001-5,000	71 contacts →
	Partial evidence “TeleMessage, a Smarsh Company, is Transforming Business Mobile Messaging and Archiving: Managed, Secure, Reliable and IT Ready.” Source: RevenueBase Database · checked Sep 2, 2026
8	AVST	Strong evidence	Foothill Ranch, CA, United States	51-200	64 contacts →
	Strong evidence “XMedius is a global leader in the field of enterprise communications solutions.” Source: RevenueBase Database · checked Sep 2, 2026
9	Broadnet	Partial evidence	Littleton, CO, United States	51-200	58 contacts →
	Partial evidence “Our Mission: With a strong commitment to security and customer service, our innovative engagement solutions ensure that our customers can communicate with confidence.” Source: RevenueBase Database · checked Sep 2, 2026
10	Bluetie, INC	Indirect evidence	Rochester, NY, United States	11-50	51 contacts →
	Indirect evidence “Business Email Accounts, Calendaring, Contacts and Collaboration Services for Your Business from BlueTie.” Source: RevenueBase Database · checked Sep 2, 2026
11	Socialchorus	Indirect evidence	San Francisco, CA, United States	51-200	36 contacts →
	Indirect evidence “Agility is the greatest advantage in the modern marketplace.” Source: RevenueBase Database · checked Sep 2, 2026
12	Groupin WEB APP API	Indirect evidence	Wilmington, DE, United States	51-200	27 contacts →
	Indirect evidence “Meet Less.” Source: RevenueBase Database · checked Sep 2, 2026
13	Process Software	Partial evidence	New Orleans, LA, United States	51-200	18 contacts →
	Partial evidence “Process Software is a premier supplier of communications software solutions to mission critical environments in business since 1984.” Source: RevenueBase Database · checked Sep 2, 2026
14	Avada Software	Strong evidence	Rockaway, NJ, United States	11-50	13 contacts →
	Strong evidence “Avada Software builds, sells and supports Infrared360, a comprehensive J2EE compliant Enterprise Messaging management and monitoring portal enabling secure, delegated access to…” Source: RevenueBase Database · checked Sep 2, 2026
15	ACEMQ	Strong evidence	Miami, United States	11-50	12 contacts →
	Strong evidence “AceMQ consulting is a firm built on delivering excellence on all Messaging and Queuing Solutions.” Source: RevenueBase Database · checked Sep 2, 2026
16	Mail2world, INC	Partial evidence	Los Angeles, CA, United States	51-200	12 contacts →
	Partial evidence “Mail2World designs, delivers and supports a technology-leading and award-winning suite of carrier-class, Web-based email messaging and collaboration services.” Source: RevenueBase Database · checked Sep 2, 2026
17	Evolve IP	Partial evidence	King Of Prussia, PA, United States	201-500	11 contacts →
	Partial evidence “Evolve IP partners with IT professionals to bring together their essential productivity and communication tools into a single, secure cloud-based solution, ne-tuned for the hybrid…” Source: RevenueBase Database · checked Sep 2, 2026
18	Transend Corporation	Strong evidence	Palo Alto, CA, United States	11-50	11 contacts →
	Strong evidence “Transend Corporation, headquartered in the heart of California’s Silicon Valley, provides industry leading solutions to architect, implement, migrate and extend enterprise…” Source: RevenueBase Database · checked Sep 2, 2026
19	VONIX	Partial evidence	Orlando, FL, United States	11-50	7 contacts →
	Partial evidence “Vonix offers a powerful cloud-based VoIP and business messaging platform that enhances team communication.” Source: RevenueBase Database · checked Sep 2, 2026
20	Brosix	Partial evidence	Wilmington, DE, United States	11-50	6 contacts →
	Partial evidence “Offers an easy-to-use, affordable enterprise instant messenger featuring advanced security, privacy, and customization.” Source: RevenueBase Database · checked Sep 2, 2026
21	Emailopen	Partial evidence	Malibu, CA, United States	11-50	5 contacts →
	Partial evidence “Since 2001, EmailOpen™ has been a leader in innovative electronic mail solutions, delivering proven and measurable results to the internal communication and direct marketing…” Source: RevenueBase Database · checked Sep 2, 2026
22	Pocketstop	Partial evidence	Dallas, TX, United States	11-50	5 contacts →
	Partial evidence “Pocketstop is a communication software solutions company who empowers companies to create personalized, automated messages designed to provide rapid ROI backed by the industry’s…” Source: RevenueBase Database · checked Sep 2, 2026
23	Messagewatcher, LLC	Indirect evidence	Denver, CO, United States	11-50	4 contacts →
	Indirect evidence “MessageWatcher delivers a platform enabling you to manage all your communications from one dashboard while mitigating risk and satisfying industry and government regulations.” Source: RevenueBase Database · checked Sep 2, 2026
24	Blix INC	Partial evidence	Jersey City, NJ, United States	51-200	3 contacts →
	Partial evidence “Blix is a leading provider of messaging platforms for consumers and business customers.” Source: RevenueBase Database · checked Sep 2, 2026
25	Openpost	Indirect evidence	West Haven, CT, United States	11-50	2 contacts →
	Indirect evidence “Openpost is an interactive message that allows companies and professionals to enhance their business in a simple and innovative way.” Source: RevenueBase Database · checked Sep 2, 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: enterprise messaging solutions. 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 enterprise messaging solutions.
Partial evidence: Its own public description names part of enterprise messaging solutions, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise messaging solutions. 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 105 enterprise messaging solutions based in the United States

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Enterprise messaging solutions based in the United States at a glance

As of Sep 2, 2026

23.8%Verified-email coverage

24.2%Mobile-number coverage

15.3Average contacts per company

11-50Median size (employees)

8.6%Largest-city concentration · San Francisco

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 enterprise messaging solutions, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “enterprise messaging solutions”. 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 enterprise messaging solutions), 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 enterprise messaging solutions, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 381 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 2, 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.

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 enterprise messaging solutions, 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 enterprise messaging solutions are there based in the United States?

RevenueBase identified 105 enterprise messaging solutions headquartered in the United States 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?

Jive Software, headquartered in Austin, tops this list with the largest team on record.

Which city has the most enterprise messaging solutions?

San Francisco leads with 9 headquartered companies, followed by Palo Alto (4) and Miami (4).

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 381 verified decision-maker contacts tracked across these 105 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 2, 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.