Company lists · Data refreshed November 2026

Top 25 Email and collaboration services based in the United States

RevenueBase identified 186 company matches for email and collaboration services associated with the United States as of November 2026 and tracks 3,049 professional contacts across them, including 1,176 with verified work emails. New York is the largest hub.

This list covers company matches for email and collaboration services 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 6, 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 6, 2026 How this list was built
186Companies
3,049Contacts tracked
1,176Verified emails
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The 25 largest email and collaboration services based in the United States

Ranked by team size
Top 25 of 186 company matches for email and collaboration services based in the United States, 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 matchSunnyvale, CA, United StatesHQ recorded Nov 6, 20261,001-5,0001,411 contacts →

Exact match

“Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchSan Antonio, TX, United StatesHQ recorded Nov 6, 2026201-500188 contacts →

Exact match

“Sinch Mailgun is the leading email delivery service for businesses around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBuffalo, NY, United StatesHQ recorded Nov 6, 2026201-500185 contacts →

Exact match

“Synacor is a cloud-based software and services company headquartered in Buffalo, New York with offices across the globe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchAustin, TX, United StatesHQ recorded Nov 6, 2026501-1,000176 contacts →

Exact match

“Jive is the leading provider of modern communication and collaboration solutions for business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 202651-200134 contacts →

Exact match

“PanTerra is a business-class Unified Cloud Service Provider, seamlessly delivering unified communications, team collaboration, call center, file sync & share, and business…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchRochester, NY, United StatesHQ recorded Nov 6, 202611-5054 contacts →

Exact match

“Business Email Accounts, Calendaring, Contacts and Collaboration Services for Your Business from BlueTie.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchThe Woodlands, TX, United StatesHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“MediaFire is a cloud storage service that helps people store, organize, and share data via the Internet.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchStamford, CT, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“P2 is transforming how Managed Service Providers (MSPs) and SaaS vendors operate by unifying cloud distribution, IT management, and employee lifecycle tools into one streamlined…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchPalatine, IL, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“If you are looking for a completely managed enterprise cloud solution for your emails, files, and phones with a helpdesk, advanced security, systems management and CIO strategy…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHonolulu, HI, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Cloud Computing, Hosted Exchange, Web Hosting Network consulting and administration, VOIP, Managed services, Data storage, forensic investigation, authorized Clearwell and EnCase…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMaplewood, NJ, United StatesHQ recorded Nov 6, 202651-20015 contacts →

Exact match

“Apps4Rent is a Microsoft Cloud Solution Provider (CSP) and a Microsoft Gold Partner in Cloud Productivity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchTampa, FL, United StatesHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“GCI offers a complete spectrum of collaboration solutions that enables organizations to improve efficiency and increase productivity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchTampa, CO, United StatesHQ recorded Nov 6, 2026201-50014 contacts →

Exact match

“Surviving in today’s business world often boils down to your ability to adapt rapidly to change, something that’s not always possible with an in-house IT infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMount Vernon, WA, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“You Found Us.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchFlower Mound, TX, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“FilesAnywhere, headquartered in Bedford, Texas, is a cloud content management and file sharing service for businesses that offers cloud storage, file synchronization, personal…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchFrederick, MD, United StatesHQ recorded Nov 6, 20261-1013 contacts →

Exact match

“We are technology consultants focused on easy-to-start and easy-to-use collaboration tools.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Reliable and Secure email hosting services for SMB and Enterprise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 202651-20012 contacts →

Exact match

“Mail2World designs, delivers and supports a technology-leading and award-winning suite of carrier-class, Web-based email messaging and collaboration services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchPalo Alto, CA, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Transend Corporation, headquartered in the heart of California’s Silicon Valley, provides industry leading solutions to architect, implement, migrate and extend enterprise…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSalisbury, NC, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Walser Technology Group, Inc.(WTG) is a Technology Services Company located in the Historic Downtown of Salisbury North Carolina.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Everleagues provides the technology to bring organizations, clients, applications and data all in one secure location.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“We.Team makes team communication simpler, more structured and more productive.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMiami, FL, United StatesHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Down-to earth Cloud services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchOverland Park, KS, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Nuvio is a hosted business and communications service provider offering a full suite of award-winning business solutions targeted to small and medium-sized organizations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchCampbell, OR, United StatesHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Today’s modern office demands that information be mobile while remaining secure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 186 email and collaboration services based in the United States

See the full list, filter by size, metro and specialty, and access 1,176 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Email and collaboration services based in the United States at a glance

As of Nov 6, 2026
38.6%Verified-email coverage
16.4Average contacts per company
1-10Median size (employees)
3.8%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
102
11-50
58
51-200
14
201-500
5
501-1,000
2
1,001-5,000
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 186 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 “email and collaboration services” 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 1,176 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.

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 “email and collaboration services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many email and collaboration services are there based in the United States?

RevenueBase identified 186 company matches for email and collaboration services 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?

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

Which city has the most email and collaboration services?

New York leads with 7 company records, followed by Miami (5) and San Francisco (5).

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 1,176 professional contacts with verified work emails tracked across these 186 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.