Company lists · Data refreshed September 2026
Top 25 Sales outsourcing companies based in the United States
RevenueBase identified 2,955 sales outsourcing companies headquartered in the United States as of September 2026 and tracks 49,128 professional contacts across them, including 6,700 with verified work emails and 9,482 with mobile numbers. New York is the largest hub.
This list covers sales 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.
The 25 largest sales outsourcing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | Full Potential SolutionsPartial evidence | 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,188 | ||||
“Credico is the world's leading face-to-face customer acquisition agency, helping our clients attract and retain loyal customers.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,068 | ||||
“CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 724 | ||||
“We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | SalebuildIndirect evidence | 708 | |||
“Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Flexisales INCIndirect evidence | 697 | |||
“Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 609 | ||||
“Infinity is an award-winning inside sales agency and consulting firm with 30 years of experience helping B2B companies maximize sales and drive revenue.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | Movingdneedle Pvt. LTDPartial evidence | 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, 2026Thanks. The Data Team will review it. | |||||
| 12 | 499 | ||||
“Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 482 | ||||
“InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 455 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Smart Circle InternationalPartial evidence | 426 | |||
“At Smart Circle, our goal is to provide our clients with access to customized face-to- face marketing and sales solutions by connecting our clients with a dynamic network of…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Touchstone CommunicationsIndirect evidence | 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, 2026Thanks. The Data Team will review it. | |||||
| 17 | 380 | ||||
“Beyond Codes is a global B2B lead generation and appointment-setting agency trusted by some of the world's leading technology companies to build enterprise sales pipeline.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 377 | ||||
“EBQ is an outsourced sales and marketing organization that provides services to help companies scale.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 349 | ||||
“FunnL was built on a revolutionary idea: B2B companies don’t need more leads-they need more qualified sales meetings with decision-makers.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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, 2026Thanks. The Data Team will review it. | |||||
| 21 | 328 | ||||
“We create opportunity: For our clients, our team, and the future.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 289 | ||||
“Current Vertical Focus: Real Estate - Lead Generation, Lead Conversion, Lead Qualification, Agent Recruiting Mortgage - Lead Conversion, Lead Qualification Insurance - Lead…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 256 | ||||
“Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Rocket ConnectionsPartial evidence | 247 | |||
“Rocket Connections is a sales and support platform specializing in contact center services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 223 | ||||
“Founded in 2016 and headquartered in Pensacola, Florida, MarketJoy is a B2B lead generation, appointment generation and sales development partner built to deliver predictable…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 2,955 sales outsourcing companies based in the United States
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Sales outsourcing companies based in the United States at a glance
As of Sep 6, 2026Companies by employee count
Verified emails by last verification
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 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 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 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, 6,700 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 outsourcing companies by metro
- Sales outsourcing companies in New York142
- Sales outsourcing companies in Austin70
- Sales outsourcing companies in Los Angeles69
- Sales outsourcing companies in San Francisco68
- Sales outsourcing companies in Miami67
- Sales outsourcing companies in Sheridan67
- Sales outsourcing companies in Houston54
- Sales outsourcing companies in Chicago47
- Sales outsourcing companies in San Diego47
- Sales outsourcing companies in Atlanta45
- Sales outsourcing companies in Dallas42
- Sales outsourcing companies in Orlando42
- Sales outsourcing companies in Denver34
- Sales outsourcing companies in Phoenix32
- Sales outsourcing companies in Wilmington30
- Sales outsourcing companies in Boston28
- Sales outsourcing companies in Charlotte28
- Sales outsourcing companies in Las Vegas27
Frequently asked
How many sales outsourcing companies are there based in the United States?
RevenueBase identified 2,955 sales 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?
Marketsource INC, headquartered in Alpharetta, tops this list with the largest team on record.
Which city has the most sales outsourcing companies?
New York leads with 142 headquartered companies, followed by Austin (70) and Los Angeles (69).
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 6,700 verified decision-maker contacts tracked across these 2,955 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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Sales outsourcing companies by geography
- Sales outsourcing companies based in the United Kingdom
- Sales outsourcing companies based in France
- Sales outsourcing companies based in Germany
- Sales outsourcing companies based in Canada
- Sales outsourcing companies based in Brazil
- Sales outsourcing companies based in the Netherlands
- Sales outsourcing companies based in Australia
- Sales outsourcing companies based in Spain
- Sales outsourcing companies based in South Africa
- Sales outsourcing companies based in Italy
- Sales outsourcing companies based in Poland
- Sales outsourcing companies based in Sweden
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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.
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