Company lists · Data verified August 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 Verified Aug 28, 2026 105 companies tracked

There are 105 enterprise messaging solutions headquartered in the United States (RevenueBase, August 2026). RevenueBase 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. Data current as of August 28, 2026.

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 verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Jive Software	Austin, TX	501-1,000	165	1
2	Mattermost	Palo Alto, CA	51-200	149	104
3	Easylink Services	Tinton Falls, NJ	501-1,000	145	17
4	Fuze An 8x8 Company	Boston, MA	501-1,000	103	44
5	Netfortris, A Sangoma Company	Seattle, WA	201-500	75	45
6	MIO	Austin, TX	11-50	74	9
7	Telemessage, A Smarsh Company	Acton, MA	1,001-5,000	71	39
8	AVST	Foothill Ranch, CA	51-200	64	7
9	Broadnet	Littleton, CO	51-200	58	32
10	Bluetie, INC	Rochester, NY	11-50	51	5
11	Socialchorus	San Francisco, CA	51-200	36	2
12	Groupin WEB APP API	Wilmington, DE	51-200	27	4
13	Process Software	New Orleans, LA	51-200	18	3
14	Avada Software	Rockaway, NJ	11-50	13	5
15	ACEMQ	Miami	11-50	12	6
16	Mail2world, INC	Los Angeles, CA	51-200	12	3
17	Evolve IP	King Of Prussia, PA	201-500	11	6
18	Transend Corporation	Palo Alto, CA	11-50	11	5
19	VONIX	Orlando, FL	11-50	7	5
20	Brosix	Wilmington, DE	11-50	6	2
21	Emailopen	Malibu, CA	11-50	5	4
22	Pocketstop	Dallas, TX	11-50	5	2
23	Messagewatcher, LLC	Denver, CO	11-50	4	1
24	Blix INC	Jersey City, NJ	51-200	3	1
25	Openpost	West Haven, CT	11-50	2	1

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 Aug 28, 2026

11-50Median size (employees)

San FranciscoLargest hub · 9 HQs

388Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Enterprise messaging solutions by metro

Metro	Companies
Enterprise messaging solutions in San Francisco	9
Enterprise messaging solutions in Palo Alto	4
Enterprise messaging solutions in Miami	4
Enterprise messaging solutions in New York	4
Enterprise messaging solutions in Austin	3
Enterprise messaging solutions in Wilmington	3
Enterprise messaging solutions in Boston	2
Enterprise messaging solutions in San Mateo	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “enterprise messaging solutions”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many enterprise messaging solutions are there based in the United States?

There are 105 enterprise messaging solutions headquartered in the United States as of August 2026 (RevenueBase).

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 is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.