Company lists · Data refreshed September 2026

Top 25 Outbound sales organizations based in the United States

Name: Outbound sales organizations based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 3,200 companies tracked

RevenueBase identified 3,200 outbound sales organizations headquartered in the United States as of September 2026 and tracks 77,950 professional contacts across them, including 9,430 with verified work emails. New York is the largest hub.

This list covers outbound sales organizations 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 21, 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 21, 2026 86% judged on-target in blind review

3,200Companies

77,950Contacts tracked

9,430Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest outbound sales organizations based in the United States

Ranked by team size

Top 25 of 3,200 outbound sales organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to outbound sales organizations: 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	Marketsource INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 21, 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 21, 2026
2	Advanced Call Center Technologies, LLC	Indirect evidence	Berwyn, PA, United StatesHQ checked Sep 21, 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 21, 2026
3	Stream Global Services	Partial evidence	Eagan, MN, United StatesHQ checked Sep 21, 2026	10001+	2,772 contacts →
	Partial evidence “Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Source: RevenueBase Database · checked Sep 21, 2026
4	Marketstar	Partial evidence	Ogden, UT, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,446 contacts →
	Partial evidence “MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Source: RevenueBase Database · checked Sep 21, 2026
5	Alta Resources	Indirect evidence	Neenah, WI, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,046 contacts →
	Indirect evidence “Alta Resources has always worked to be something different.” Source: RevenueBase Database · checked Sep 21, 2026
6	Full Potential Solutions	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,238 contacts →
	Indirect 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 21, 2026
7	Credico	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	n/a	1,188 contacts →
	Indirect evidence “Credico is the world's leading face-to-face customer acquisition agency, helping our clients attract and retain loyal customers.” Source: RevenueBase Database · checked Sep 21, 2026
8	T-Roc	Partial evidence	Coral Gables, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,135 contacts →
	Partial evidence “The Revenue Optimization Companies (T-ROC) is home to four sales solutions companies that enable clients to fulfill all of their sales performance needs.” Source: RevenueBase Database · checked Sep 21, 2026
9	Inktel Contact Center Solutions	Indirect evidence	Doral, FL, United StatesHQ checked Sep 21, 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 21, 2026
10	Answernet	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 21, 2026	501-1,000	883 contacts →
	Indirect evidence “If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Source: RevenueBase Database · checked Sep 21, 2026
11	CBE Companies	Indirect evidence	Cedar Falls, IA, United StatesHQ checked Sep 21, 2026	1,001-5,000	877 contacts →
	Indirect evidence “CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Source: RevenueBase Database · checked Sep 21, 2026
12	Horatio	Indirect evidence	New York, United StatesHQ checked Sep 21, 2026	1,001-5,000	860 contacts →
	Indirect 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 21, 2026
13	Memoryblue	Indirect evidence	Tysons, VA, United StatesHQ checked Sep 21, 2026	501-1,000	825 contacts →
	Indirect evidence “memoryBlue is the go-to partner for revenue leaders in B2B Tech looking to grow their pipeline engine.” Source: RevenueBase Database · checked Sep 21, 2026
14	Abstrakt Marketing Group	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 21, 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 21, 2026
15	Salebuild	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 21, 2026	n/a	708 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
16	Onetouch Direct	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	622 contacts →
	Indirect evidence “As a trusted global outsource provider, we know connection is a universal language.” Source: RevenueBase Database · checked Sep 21, 2026
17	Infinity	Partial evidence	Cedar Rapids, IA, United StatesHQ checked Sep 21, 2026	501-1,000	609 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 21, 2026
18	Buwelo Corporate	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 21, 2026	1,001-5,000	598 contacts →
	Indirect evidence “Buwelo BPO is a global Business Process Outsourcing provider of multi-channel customer experience and back office solutions.” Source: RevenueBase Database · checked Sep 21, 2026
19	Global Contact Services GCS	Indirect evidence	Salisbury, NC, United StatesHQ checked Sep 21, 2026	501-1,000	542 contacts →
	Indirect evidence “We are customer service experts.” Source: RevenueBase Database · checked Sep 21, 2026
20	Movingdneedle Pvt. LTD	Partial evidence	Sterling Heights, MI, United StatesHQ checked Sep 21, 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 21, 2026
21	The Pipeline Group	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	201-500	523 contacts →
	Indirect evidence “The Pipeline Group helps B2B tech companies scale pipeline fast through our SDR-as-a-Service model.” Source: RevenueBase Database · checked Sep 21, 2026
22	Callbox INC	Indirect evidence	Encino, CA, United StatesHQ checked Sep 21, 2026	201-500	499 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
23	Infoanalytica, INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 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 21, 2026
24	Demandshore	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	501-1,000	478 contacts →
	Partial evidence “About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Source: RevenueBase Database · checked Sep 21, 2026
25	Saleshive	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	51-200	455 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 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: outbound sales organizations. 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 outbound sales organizations.
Partial evidence: Its own public description names part of outbound sales organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outbound sales organizations. 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 3,200 outbound sales organizations based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 9,430 reachable decision-makers.

Free signup · no credit card

View the full list →

Outbound sales organizations based in the United States at a glance

As of Sep 21, 2026

12.1%Verified-email coverage

24.4Average contacts per company

11-50Median size (employees)

4.6%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

1,332

11-50

1,122

51-200

498

201-500

142

501-1,000

1,001-5,000

5,001-10,000

10001+

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 3,200 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 outbound sales organizations, 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 “outbound sales organizations”. 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 outbound sales organizations), 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 outbound sales organizations, 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, 9,430 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 21, 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.

Outbound sales organizations by metro

Outbound sales organizations in New York147
Outbound sales organizations in Sheridan82
Outbound sales organizations in Miami80
Outbound sales organizations in Los Angeles79
Outbound sales organizations in Austin77
Outbound sales organizations in Houston67
Outbound sales organizations in San Francisco66
Outbound sales organizations in Atlanta52
Outbound sales organizations in San Diego47
Outbound sales organizations in Chicago44
Outbound sales organizations in Dallas42
Outbound sales organizations in Orlando40
Outbound sales organizations in Denver34
Outbound sales organizations in Las Vegas32
Outbound sales organizations in Phoenix31
Outbound sales organizations in Charlotte30
Outbound sales organizations in Tampa29
Outbound sales organizations in Boston28
Outbound sales organizations in Wilmington25

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 outbound sales organizations, 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 outbound sales organizations are there based in the United States?

RevenueBase identified 3,200 outbound sales organizations 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 outbound sales organizations?

New York leads with 147 headquartered companies, followed by Sheridan (82) and Miami (80).

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 9,430 verified decision-maker contacts tracked across these 3,200 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,200 outbound sales organizations based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Outbound sales organizations 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.