Company lists · Data refreshed September 2026

Top 25 Chat and messaging outsourcing companies based in the United States

RevenueBase identified 602 chat and messaging outsourcing companies headquartered in the United States as of September 2026 and tracks 39,658 professional contacts across them, including 10,336 with verified work emails. San Francisco is the largest hub.

This list covers chat and messaging outsourcing companies 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 27, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
602Companies
39,658Contacts tracked
10,336Verified emails
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The 25 largest chat and messaging outsourcing companies based in the United States

Ranked by team size
Top 25 of 602 chat and messaging outsourcing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to chat and messaging outsourcing companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceBelmont, CA, United StatesHQ checked Sep 27, 20265,001-10,0006,431 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 27, 2026
2Indirect evidenceBloomington, IL, United StatesHQ checked Sep 27, 202610001+5,553 contacts →

Indirect evidence

“When people reach for their phones, use laptops, or grab their tablets, Afni's contact center teams are there to provide prompt and friendly help.”

Source: RevenueBase Database · checked Sep 27, 2026
3Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 2026n/a2,026 contacts →

Indirect evidence

“Human-Led, Tech-Powered Customer Service For over 25 years, Liveops has redefined customer support by combining technology with real human connection.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceAustin, TX, United StatesHQ checked Sep 27, 20261,001-5,0001,711 contacts →

Indirect evidence

“SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.”

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidenceScottsdale, AZ, United StatesHQ checked Sep 27, 20261,001-5,0001,638 contacts →

Indirect evidence

“Build amazing customer experiences with Nextiva’s AI-powered platform.”

Source: RevenueBase Database · checked Sep 27, 2026
6Indirect evidenceSan Ramon, CA, United StatesHQ checked Sep 27, 20261,001-5,0001,473 contacts →

Indirect evidence

“Dialpad is the leading AI-powered communications intelligence platform creating human-first, AI-enhanced solutions that will drive the next wave of how businesses communicate with…”

Source: RevenueBase Database · checked Sep 27, 2026
7Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 20261,001-5,0001,444 contacts →

Indirect evidence

“We’re Intercom, the AI customer service company helping businesses deliver incredible customer experiences at scale.”

Source: RevenueBase Database · checked Sep 27, 2026
8Partial evidenceEl Paso, TX, United StatesHQ checked Sep 27, 20261,001-5,0001,418 contacts →

Partial evidence

“DATAMARK Inc, a provider of omni-channel contact centers and business process outsourcing (BPO) services since 1989, employs more than at our facilities in the United States…”

Source: RevenueBase Database · checked Sep 27, 2026
9Indirect evidenceNew York, United StatesHQ checked Sep 27, 20261,001-5,0001,287 contacts →

Indirect evidence

“Attentive® knows personalized customer experiences require both powerful technology and the right people behind it.”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 20261,001-5,000883 contacts →

Indirect evidence

“XtendOps is an AI-powered BPO built for modern customer experience.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceNew York, United StatesHQ checked Sep 27, 20261,001-5,000860 contacts →

Partial evidence

“Horatio is a premier, tech-enabled outsourcing partner helping ambitious companies scale customer experience and complex business operations without compromising quality…”

Source: RevenueBase Database · checked Sep 27, 2026
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 2026501-1,000804 contacts →

Indirect evidence

“The collaborative, AI-powered platform for customer conversations.”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceOrlando, FL, United StatesHQ checked Sep 27, 2026501-1,000479 contacts →

Indirect evidence

“Activus Connect is a premium provider of Customer Experience Outsourced Solutions, operating across the Continental US & Puerto Rico.”

Source: RevenueBase Database · checked Sep 27, 2026
14Partial evidencePortland, OR, United StatesHQ checked Sep 27, 2026501-1,000453 contacts →

Partial evidence

“Ruby supports more than businesses with live virtual receptionists and 24/7 chat services.”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidencePalo Alto, CA, United StatesHQ checked Sep 27, 2026201-500448 contacts →

Indirect evidence

“SaaS Labs is all about helping sales and support teams reach their full potential.”

Source: RevenueBase Database · checked Sep 27, 2026
16Indirect evidenceSanta Ana, CA, United StatesHQ checked Sep 27, 2026501-1,000431 contacts →

Indirect evidence

“About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceTulsa, United StatesHQ checked Sep 27, 2026n/a377 contacts →

Indirect evidence

“iPacesetters”

Source: RevenueBase Database · checked Sep 27, 2026
18Indirect evidenceFort Lauderdale, FL, United StatesHQ checked Sep 27, 20261,001-5,000301 contacts →

Indirect evidence

“OutPLEX is a leading international digital and voice customer contact management services organization developing solutions for the world's most trusted brands.”

Source: RevenueBase Database · checked Sep 27, 2026
19Indirect evidenceSan Mateo, CA, United StatesHQ checked Sep 27, 2026201-500297 contacts →

Indirect evidence

“Sendbird is the AI customer experience company.”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceLos Altos, CA, United StatesHQ checked Sep 27, 202651-200293 contacts →

Indirect evidence

“Founded by a team from Google, Apple, and Intuit, Smith.ai is known for superior call answering services.”

Source: RevenueBase Database · checked Sep 27, 2026
21Partial evidenceDowntown Redwood City, CA, United StatesHQ checked Sep 27, 2026201-500267 contacts →

Partial evidence

“We enable businesses to drive engagement, revenue, and loyalty with AI-powered chat commerce.”

Source: RevenueBase Database · checked Sep 27, 2026
22Partial evidenceAustin, TX, United StatesHQ checked Sep 27, 2026201-500247 contacts →

Partial evidence

“AI agents to engage and delight your customers across Phone calls, Chat, WhatsApp, SMS, Email and Slack.”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceSan Mateo, CA, United StatesHQ checked Sep 27, 2026201-500241 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
24Partial evidenceAlpharetta, GA, United StatesHQ checked Sep 27, 202651-200237 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
25Partial evidenceChicago, IL, United StatesHQ checked Sep 27, 202651-200232 contacts →

Partial evidence

“LiveAdmins is one of the leading live chat service providers in the industry.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 602 chat and messaging outsourcing companies based in the United States

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Chat and messaging outsourcing companies based in the United States at a glance

As of Sep 27, 2026
26.1%Verified-email coverage
65.9Average contacts per company
11-50Median size (employees)
7.3%Largest-city concentration · San Francisco
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
191
11-50
226
51-200
108
201-500
41
501-1,000
12
1,001-5,000
18
5,001-10,000
2
10001+
4

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 602 companies.

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 chat and messaging outsourcing companies, 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 “chat and messaging outsourcing companies”. 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 chat and messaging outsourcing companies), 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 chat and messaging outsourcing companies, 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, 10,336 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 27, 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 chat and messaging outsourcing companies, 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 chat and messaging outsourcing companies are there based in the United States?

RevenueBase identified 602 chat and messaging outsourcing companies 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?

Ringcentral, headquartered in Belmont, tops this list with the largest team on record.

Which city has the most chat and messaging outsourcing companies?

San Francisco leads with 44 headquartered companies, followed by New York (35) and Austin (18).

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 10,336 verified decision-maker contacts tracked across these 602 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 27, 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.