Company lists · Data refreshed September 2026

Top 25 Sales support outsourcing companies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 1,657 companies tracked

RevenueBase identified 1,657 sales support outsourcing companies headquartered in the United States as of September 2026 and tracks 66,652 professional contacts across them, including 8,701 with verified work emails and 10,299 with mobile numbers. New York is the largest hub.

This list covers sales support 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, how directly it supports the match, and when it was last checked. Data refreshed September 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 HQ checked on every row Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

1,657Companies

66,652Contacts tracked

8,701Verified emails

10,299Mobile numbers

Explore all 1,657 companies → Free signup · no credit card · 500 free credits

The 25 largest sales support outsourcing companies based in the United States

Ranked by team size

Top 25 of 1,657 sales support outsourcing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names sales support outsourcing companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	IBEXPartial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	10001+	15,457
	“ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…” Source: company website · checked Sep 6, 2026
2	Marketsource INCPartial evidence	Alpharetta, GA, United StatesHQ checked Sep 6, 2026	5,001-10,000	3,063
	“MarketSource, an Allegis Group company, is a sales acceleration company focused on delivering better outcomes for many of the world’s most iconic brands.” Source: company website · checked Sep 6, 2026
3	Advanced Call Center Technologies, LLCIndirect evidence	Berwyn, PA, United StatesHQ checked Sep 6, 2026	5,001-10,000	2,774
	“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Source: company website · checked Sep 6, 2026
4	MarketstarStrong evidence	Ogden, UT, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,446
	“MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Source: company website · checked Sep 6, 2026
5	Alta ResourcesIndirect evidence	Neenah, WI, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,046
	“Alta Resources has always worked to be something different.” Source: company website · checked Sep 6, 2026
6	SupportninjaPartial evidence	Austin, TX, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,711
	“SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Source: company website · checked Sep 6, 2026
7	Support Services GroupPartial evidence	Waco, TX, United StatesHQ checked Sep 6, 2026	5,001-10,000	1,710
	“Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.” Source: company website · checked Sep 6, 2026
8	Full Potential SolutionsPartial evidence	Waltham, MA, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,238
	“Full Potential Solutions (FPS) is a new kind of performance-based outsourcing firm that puts culture and employees first, because we believe that happy, fulfilled teams accomplish…” Source: company website · checked Sep 6, 2026
9	Inktel Contact Center SolutionsIndirect evidence	Doral, FL, United StatesHQ checked Sep 6, 2026	1,001-5,000	902
	“Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Source: company website · checked Sep 6, 2026
10	HoratioPartial evidence	New York, United StatesHQ checked Sep 6, 2026	1,001-5,000	860
	“Horatio is a premier, tech-enabled outsourcing partner helping ambitious companies scale customer experience and complex business operations without compromising quality…” Source: company website · checked Sep 6, 2026
11	Sequential Technology InternationalIndirect evidence	Bethlehem, United StatesHQ checked Sep 6, 2026	1,001-5,000	758
	“Sequential Tech is the trusted outsource partner of wireline/wireless telecommunication, broadband, cable/MSO, and satellite service providers.” Source: company website · checked Sep 6, 2026
12	Abstrakt Marketing GroupIndirect evidence	St Louis, MO, United StatesHQ checked Sep 6, 2026	501-1,000	724
	“We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Source: company website · checked Sep 6, 2026
13	TelenetworkStrong evidence	San Marcos, TX, United StatesHQ checked Sep 6, 2026	1,001-5,000	562
	“teleNetwork is a leading provider of outsourced customer service, technical support, and sales enablement solutions for technology products and services.” Source: company website · checked Sep 6, 2026
14	Movingdneedle Pvt. LTDPartial evidence	Sterling Heights, MI, United StatesHQ checked Sep 6, 2026	51-200	528
	“movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Source: company website · checked Sep 6, 2026
15	Infoanalytica, INCPartial evidence	San Jose, CA, United StatesHQ checked Sep 6, 2026	201-500	482
	“InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Source: company website · checked Sep 6, 2026
16	SupportzebraStrong evidence	Houston, TX, United StatesHQ checked Sep 6, 2026	1,001-5,000	454
	“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: company website · checked Sep 6, 2026
17	The FunctionaryIndirect evidence	Aubrey, TX, United StatesHQ checked Sep 6, 2026	1,001-5,000	415
	“The Functionary helps companies scale operations around the reality of their business, not a standard model.” Source: company website · checked Sep 6, 2026
18	Touchstone CommunicationsIndirect evidence	Fort Worth, TX, United StatesHQ checked Sep 6, 2026	501-1,000	393
	“Touchstone Communications was built in 2002 on the philosophy of hiring educated, motivated talent and then providing them with the best training and management to achieve our…” Source: company website · checked Sep 6, 2026
19	EBQPartial evidence	Austin, TX, United StatesHQ checked Sep 6, 2026	201-500	377
	“EBQ is an outsourced sales and marketing organization that provides services to help companies scale.” Source: company website · checked Sep 6, 2026
20	Connexus Resource GroupIndirect evidence	Bainbridge Island, United StatesHQ checked Sep 6, 2026	201-500	373
	Source: company website · checked Sep 6, 2026
21	The Connection Contact CenterIndirect evidence	Bloomington, MN, United StatesHQ checked Sep 6, 2026	1,001-5,000	354
	“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: company website · checked Sep 6, 2026
22	FTOPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 2026	1,001-5,000	348
	“FTO™ completes four types of work, namely customer engagement, data entry and acquisition, help desk and tech support, and back-office support.” Source: company website · checked Sep 6, 2026
23	JumpcrewPartial evidence	Nashville, TN, United StatesHQ checked Sep 6, 2026	201-500	339
	“Launch-ready sales teams, experienced leaders, and time-tested processes to help you acquire new customers faster and with less risk than doing it alone.” Source: company website · checked Sep 6, 2026
24	Eplanet GlobalIndirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 6, 2026	501-1,000	329
	“About Eplanet Global Since our inception in 2003, Eplanet Global has been a trailblazer in the tech-driven BPO industry.” Source: company website · checked Sep 6, 2026
25	CydcorIndirect evidence	Agoura Hills, CA, United StatesHQ checked Sep 6, 2026	51-200	328
	“We create opportunity: For our clients, our team, and the future.” Source: company website · checked Sep 6, 2026

Showing 25 of 1,657 sales support outsourcing companies based in the United States

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Sales support outsourcing companies based in the United States at a glance

As of Sep 6, 2026

11-50Median size (employees)

New YorkLargest hub · 76 HQs

10,299Contacts with mobile numbers

Sep 6, 2026Data refreshed

Companies by employee count

1-10

670

11-50

545

51-200

285

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

7,841

31–60

713

61–90

90–180

180+

137

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 sales support outsourcing companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “sales support outsourcing companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among sales support 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 an evidence 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, 8,701 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 6, 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.

Sales support outsourcing companies by metro

Sales support outsourcing companies in New York76
Sales support outsourcing companies in Los Angeles50
Sales support outsourcing companies in Austin42
Sales support outsourcing companies in Houston41
Sales support outsourcing companies in Sheridan39
Sales support outsourcing companies in Miami38
Sales support outsourcing companies in San Francisco34
Sales support outsourcing companies in Chicago27
Sales support outsourcing companies in Phoenix27

Frequently asked

How many sales support outsourcing companies are there based in the United States?

RevenueBase identified 1,657 sales support 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?

IBEX, headquartered in Washington, tops this list with the largest team on record.

Which city has the most sales support outsourcing companies?

New York leads with 76 headquartered companies, followed by Los Angeles (50) and Austin (42).

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 8,701 verified decision-maker contacts tracked across these 1,657 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 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.