Company lists · Data refreshed September 2026

Top 25 Email support outsourcing services based in the United States

Name: Email support outsourcing services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 414 companies tracked

RevenueBase identified 414 email support outsourcing services headquartered in the United States as of September 2026 and tracks 15,344 professional contacts across them, including 1,990 with verified work emails. New York is the largest hub.

This list covers email support outsourcing services 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 28, 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 28, 2026 86% judged on-target in blind review

414Companies

15,344Contacts tracked

1,990Verified emails

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The 25 largest email support outsourcing services based in the United States

Ranked by team size

Top 25 of 414 email support outsourcing services based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to email support outsourcing services: 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	Supportninja	Partial evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,711 contacts →
	Partial evidence “SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Source: RevenueBase Database · checked Sep 28, 2026
2	Support Services Group	Partial evidence	Waco, TX, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,710 contacts →
	Partial evidence “Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.” Source: RevenueBase Database · checked Sep 28, 2026
3	Horatio	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	1,001-5,000	860 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 28, 2026
4	Sequential Technology International	Indirect evidence	Bethlehem, United StatesHQ checked Sep 28, 2026	1,001-5,000	758 contacts →
	Indirect evidence “Sequential Tech is the trusted outsource partner of wireline/wireless telecommunication, broadband, cable/MSO, and satellite service providers.” Source: RevenueBase Database · checked Sep 28, 2026
5	Buwelo Corporate	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 28, 2026	1,001-5,000	598 contacts →
	Partial evidence “Buwelo BPO is a global Business Process Outsourcing provider of multi-channel customer experience and back office solutions.” Source: RevenueBase Database · checked Sep 28, 2026
6	Telenetwork	Partial evidence	San Marcos, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	562 contacts →
	Partial evidence “teleNetwork is a leading provider of outsourced customer service, technical support, and sales enablement solutions for technology products and services.” Source: RevenueBase Database · checked Sep 28, 2026
7	Supportzebra	Strong evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	454 contacts →
	Strong evidence “SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention \|…” Source: RevenueBase Database · checked Sep 28, 2026
8	Velan Info Services	Indirect evidence	Dover, DE, United StatesHQ checked Sep 28, 2026	201-500	447 contacts →
	Indirect evidence “Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Source: RevenueBase Database · checked Sep 28, 2026
9	The Functionary	Indirect evidence	Aubrey, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	415 contacts →
	Indirect evidence “The Functionary helps companies scale operations around the reality of their business, not a standard model.” Source: RevenueBase Database · checked Sep 28, 2026
10	The Connection Contact Center	Indirect evidence	Bloomington, MN, United StatesHQ checked Sep 28, 2026	1,001-5,000	354 contacts →
	Indirect evidence “For over 35 years, The Connection has made a name for ourselves becoming one of the top industry partners to Fortune 500 companies looking to outsource their contact center…” Source: RevenueBase Database · checked Sep 28, 2026
11	FTO	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	1,001-5,000	348 contacts →
	Partial evidence “FTO™ completes four types of work, namely customer engagement, data entry and acquisition, help desk and tech support, and back-office support.” Source: RevenueBase Database · checked Sep 28, 2026
12	World Connection	Indirect evidence	Boise, ID, United StatesHQ checked Sep 28, 2026	1,001-5,000	284 contacts →
	Indirect evidence “World Connection helps founder-led, private equity-backed, and growth-stage small to mid-market companies transform customer experience into measurable business outcomes.” Source: RevenueBase Database · checked Sep 28, 2026
13	Chatpandas	Partial evidence	Miramar, FL, United StatesHQ checked Sep 28, 2026	201-500	226 contacts →
	Partial evidence “Being a subsidiary of Live Chat Worldwide, we at ChatPandas are a global omni channel support provider that help companies deliver an exceptional customer experience.” Source: RevenueBase Database · checked Sep 28, 2026
14	Ltvplus	Indirect evidence	Brandon, FL, United StatesHQ checked Sep 28, 2026	201-500	188 contacts →
	Indirect evidence “Imagine a world where Managed Service Providers and SaaS businesses deliver outstanding customer experience around the clock, regardless of ticket volume or technical complexity.” Source: RevenueBase Database · checked Sep 28, 2026
15	Moksh Tech	Partial evidence	Lake Hiawatha, NJ, United StatesHQ checked Sep 28, 2026	201-500	187 contacts →
	Partial evidence “We are a leading global outsourcing services company with highly skilled professionals working for our clients and partners.” Source: RevenueBase Database · checked Sep 28, 2026
16	Serverplus	Partial evidence	Orem, UT, United StatesHQ checked Sep 28, 2026	51-200	161 contacts →
	Partial evidence “Whether you need outsourced support for your ISP or for your business, after hours support, BPO services or just a virtual assistant to help you answer phones and get through the…” Source: RevenueBase Database · checked Sep 28, 2026
17	Aventus	Indirect evidence	Charleston, SC, United StatesHQ checked Sep 28, 2026	201-500	117 contacts →
	Indirect evidence “Innovative customer service experts, trusted by small & medium sized businesses.” Source: RevenueBase Database · checked Sep 28, 2026
18	Bolsterbiz	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 28, 2026	51-200	94 contacts →
	Partial evidence “BolsterBiz is a leading provider of comprehensive offshoring and outsourcing services, designed to drive business growth, optimize operational efficiency, and ensure long-term…” Source: RevenueBase Database · checked Sep 28, 2026
19	Bayside Support Services LLC	Partial evidence	Davie, NV, United StatesHQ checked Sep 28, 2026	51-200	83 contacts →
	Partial evidence “We provide reliable, friendly, and fully customizable support solutions to the consumers of some of the most visited sites in the world.” Source: RevenueBase Database · checked Sep 28, 2026
20	Xperttech INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	51-200	77 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
21	Archers Contact Solutions	Indirect evidence	Madison, NJ, United StatesHQ checked Sep 28, 2026	51-200	71 contacts →
	Indirect evidence “Archers Contact Solutions offers world class outsourced services based in the Philippines.” Source: RevenueBase Database · checked Sep 28, 2026
22	Hiredsupport	Partial evidence	Rancho Cucamonga, CA, United StatesHQ checked Sep 28, 2026	51-200	69 contacts →
	Partial evidence “HiredSupport is a leading support as a service provider and your local CX experts.” Source: RevenueBase Database · checked Sep 28, 2026
23	Apex Call Centers	Indirect evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 28, 2026	201-500	67 contacts →
	Indirect evidence “APEX was founded to provide businesses of all kinds a full-service center where they can have all their needs met.” Source: RevenueBase Database · checked Sep 28, 2026
24	Yeetiq	Indirect evidence	Sarasota, FL, United StatesHQ checked Sep 28, 2026	201-500	65 contacts →
	Indirect evidence “At Yeetiq, We believe that your customers are our biggest assets and we see value in keeping them happy.” Source: RevenueBase Database · checked Sep 28, 2026
25	Nationwide Inbound INC	Indirect evidence	Freeport, IL, United StatesHQ checked Sep 28, 2026	51-200	56 contacts →
	Indirect evidence “Nationwide Inbound has been serving clients of all sizes since 1997.” Source: RevenueBase Database · checked Sep 28, 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: email support outsourcing services. 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 email support outsourcing services.
Partial evidence: Its own public description names part of email support outsourcing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name email support outsourcing services. 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 414 email support outsourcing services based in the United States

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Email support outsourcing services based in the United States at a glance

As of Sep 28, 2026

13.0%Verified-email coverage

37.1Average contacts per company

11-50Median size (employees)

5.3%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

109

11-50

133

51-200

108

201-500

501-1,000

1,001-5,000

5,001-10,000

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 414 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 email support outsourcing services, 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 “email support outsourcing services”. 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 email support outsourcing services), 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 email support outsourcing services, 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, 1,990 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 28, 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 email support outsourcing services, 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 email support outsourcing services are there based in the United States?

RevenueBase identified 414 email support outsourcing services 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?

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

Which city has the most email support outsourcing services?

New York leads with 22 headquartered companies, followed by Sheridan (13) and Austin (12).

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 1,990 verified decision-maker contacts tracked across these 414 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 28, 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.