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, its RevenueBase Smart Search rating, 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 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 6, 2026 86% judged on-target in blind review

1,657Companies

66,652Contacts tracked

8,701Verified emails

10,299Mobile numbers

Explore this list → 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. RevenueBase Smart Search rates how each company's information relates to sales support 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	IBEX	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	10001+	15,457 contacts →
	Partial evidence “ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…” Source: RevenueBase Database · checked Sep 6, 2026
2	Marketsource INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 6, 2026	5,001-10,000	3,063 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 6, 2026
3	Advanced Call Center Technologies, LLC	Indirect evidence	Berwyn, PA, United StatesHQ checked Sep 6, 2026	5,001-10,000	2,774 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 6, 2026
4	Marketstar	Strong evidence	Ogden, UT, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,446 contacts →
	Strong evidence “MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Source: RevenueBase Database · checked Sep 6, 2026
5	Alta Resources	Indirect evidence	Neenah, WI, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,046 contacts →
	Indirect evidence “Alta Resources has always worked to be something different.” Source: RevenueBase Database · checked Sep 6, 2026
6	Supportninja	Partial evidence	Austin, TX, United StatesHQ checked Sep 6, 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 6, 2026
7	Support Services Group	Partial evidence	Waco, TX, United StatesHQ checked Sep 6, 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 6, 2026
8	Full Potential Solutions	Partial evidence	Waltham, MA, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,238 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 6, 2026
9	Inktel Contact Center Solutions	Indirect evidence	Doral, FL, United StatesHQ checked Sep 6, 2026	1,001-5,000	902 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 6, 2026
10	Horatio	Partial evidence	New York, United StatesHQ checked Sep 6, 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 6, 2026
11	Sequential Technology International	Indirect evidence	Bethlehem, United StatesHQ checked Sep 6, 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 6, 2026
12	Abstrakt Marketing Group	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 6, 2026	501-1,000	724 contacts →
	Indirect evidence “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Source: RevenueBase Database · checked Sep 6, 2026
13	Telenetwork	Strong evidence	San Marcos, TX, United StatesHQ checked Sep 6, 2026	1,001-5,000	562 contacts →
	Strong 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 6, 2026
14	Movingdneedle Pvt. LTD	Partial evidence	Sterling Heights, MI, United StatesHQ checked Sep 6, 2026	51-200	528 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 6, 2026
15	Infoanalytica, INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 6, 2026	201-500	482 contacts →
	Partial evidence “InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Source: RevenueBase Database · checked Sep 6, 2026
16	Supportzebra	Strong evidence	Houston, TX, United StatesHQ checked Sep 6, 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 6, 2026
17	The Functionary	Indirect evidence	Aubrey, TX, United StatesHQ checked Sep 6, 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 6, 2026
18	Touchstone Communications	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 6, 2026	501-1,000	393 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 6, 2026
19	EBQ	Partial evidence	Austin, TX, United StatesHQ checked Sep 6, 2026	201-500	377 contacts →
	Partial evidence “EBQ is an outsourced sales and marketing organization that provides services to help companies scale.” Source: RevenueBase Database · checked Sep 6, 2026
20	Connexus Resource Group	Indirect evidence	Bainbridge Island, United StatesHQ checked Sep 6, 2026	201-500	373 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 6, 2026
21	The Connection Contact Center	Indirect evidence	Bloomington, MN, United StatesHQ checked Sep 6, 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 6, 2026
22	FTO	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 6, 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 6, 2026
23	Jumpcrew	Partial evidence	Nashville, TN, United StatesHQ checked Sep 6, 2026	201-500	339 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 6, 2026
24	Eplanet Global	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 6, 2026	501-1,000	329 contacts →
	Indirect evidence “About Eplanet Global Since our inception in 2003, Eplanet Global has been a trailblazer in the tech-driven BPO industry.” Source: RevenueBase Database · checked Sep 6, 2026
25	Cydcor	Indirect evidence	Agoura Hills, CA, United StatesHQ checked Sep 6, 2026	51-200	328 contacts →
	Indirect evidence “We create opportunity: For our clients, our team, and the future.” Source: RevenueBase Database · checked Sep 6, 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: sales support outsourcing companies. 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 sales support outsourcing companies.
Partial evidence: Its own public description names part of sales support outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sales support outsourcing companies. 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 1,657 sales support outsourcing companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 8,701 reachable decision-makers.

Free signup · no credit card

View the full list →

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

As of Sep 6, 2026

13.1%Verified-email coverage

15.5%Mobile-number coverage

40.2Average contacts per company

11-50Median size (employees)

4.6%Largest-city concentration · New York

Sep 6, 2026Page data 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+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

7,8410–30

71331–60

961–90

190–180

137180+

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 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 “sales support 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 sales support 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 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 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, 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

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 sales support 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 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.

Ready to reach these companies? Verified emails and direct dials for all 1,657 sales support outsourcing companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Sales support outsourcing companies by geography

Browse the directory

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.