Company lists · Data refreshed September 2026

Top 25 Outbound sales agencies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 2,748 companies tracked

RevenueBase identified 2,748 outbound sales agencies headquartered in the United States as of September 2026 and tracks 48,318 professional contacts across them, including 5,941 with verified work emails and 9,497 with mobile numbers. New York is the largest hub.

This list covers outbound sales agencies 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 3, 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 3, 2026 86% judged on-target in blind review

2,748Companies

48,318Contacts tracked

5,941Verified emails

9,497Mobile numbers

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The 25 largest outbound sales agencies based in the United States

Ranked by team size

Top 25 of 2,748 outbound sales agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names outbound sales agencies: 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	Advanced Call Center Technologies, LLCIndirect evidence	Berwyn, TN, United StatesHQ checked Sep 3, 2026	5,001-10,000	2,779
	“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 3, 2026
2	MarketstarPartial evidence	Ogden, UT, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,459
	“We are celebrating nearly four decades of sales specialization and creating growth for businesses around the globe.” Source: company website · checked Sep 3, 2026
3	Inktel Contact Center SolutionsIndirect evidence	Doral, FL, United StatesHQ checked Sep 3, 2026	1,001-5,000	905
	“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 3, 2026
4	AnswernetIndirect evidence	Horsham, PA, United StatesHQ checked Sep 3, 2026	501-1,000	892
	“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: company website · checked Sep 3, 2026
5	S2w MediaIndirect evidence	New York, CA, United StatesHQ checked Sep 3, 2026	501-1,000	798
	“We are innovators, problem solvers, thought leaders, and above all else, a team.” Source: company website · checked Sep 3, 2026
6	SalelyticsIndirect evidence	Appleton, WI, United StatesHQ checked Sep 3, 2026	1,001-5,000	784
	“Salelytics is now MarketSource.” Source: company website · checked Sep 3, 2026
7	Abstrakt Marketing GroupIndirect evidence	St Louis, MO, United StatesHQ checked Sep 3, 2026	501-1,000	724
	“Abstrakt Marketing Group helps businesses grow with bold strategies that deliver results.” Source: company website · checked Sep 3, 2026
8	InfinityPartial evidence	Cedar Rapids, IA, United StatesHQ checked Sep 3, 2026	501-1,000	606
	“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 3, 2026
9	Telenet Marketing SolutionsIndirect evidence	Athens, GA, United StatesHQ checked Sep 3, 2026	201-500	554
	“From initial market awareness to the final stages of a complex B2B buying journey, modern buyers crave authentic interaction.” Source: company website · checked Sep 3, 2026
10	Callbox INCIndirect evidence	Encino, CA, United StatesHQ checked Sep 3, 2026	201-500	501
	“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 3, 2026
11	Infoanalytica, INCPartial evidence	San Jose, CA, United StatesHQ checked Sep 3, 2026	201-500	477
	“InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Source: company website · checked Sep 3, 2026
12	Beyond Codes INCIndirect evidence	Simi Valley, TX, United StatesHQ checked Sep 3, 2026	201-500	385
	“Founded in 2008, Beyond Codes Inc.” Source: company website · checked Sep 3, 2026
13	EBQPartial evidence	Austin, TX, United StatesHQ checked Sep 3, 2026	201-500	379
	“EBQ is an outsourced sales and marketing organization that provides services to help companies scale.” Source: company website · checked Sep 3, 2026
14	The Connection Contact CenterIndirect evidence	Bloomington, MN, United StatesHQ checked Sep 3, 2026	1,001-5,000	353
	“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 3, 2026
15	FUNNLPartial evidence	Philadelphia, United StatesHQ checked Sep 3, 2026	201-500	351
	“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 3, 2026
16	Unboundb2bPartial evidence	San Jose, CA, United StatesHQ checked Sep 3, 2026	201-500	295
	“UnboundB2B is a marketing agency that caters to Enterprise and Technology companies across the globe to improve ROI on their marketing spend and shorten sales cycle with its…” Source: company website · checked Sep 3, 2026
17	By Appointment Only, Inc. BAOIndirect evidence	Chelmsford, AZ, United StatesHQ checked Sep 3, 2026	201-500	294
	“The market knows us as the leader in appointment setting.” Source: company website · checked Sep 3, 2026
18	BoomsourcingIndirect evidence	Lehi, UT, United StatesHQ checked Sep 3, 2026	501-1,000	254
	“Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Source: company website · checked Sep 3, 2026
19	Rocket ConnectionsPartial evidence	Detroit, MI, United StatesHQ checked Sep 3, 2026	1,001-5,000	248
	“Rocket Connections is a sales and support platform specializing in contact center services.” Source: company website · checked Sep 3, 2026
20	SqueezePartial evidence	Orem, UT, United StatesHQ checked Sep 3, 2026	501-1,000	217
	“Squeeze (GoSqueeze.com) is the leader in Sales Experience (SX).” Source: company website · checked Sep 3, 2026
21	Plusone CompanyPartial evidence	St George, UT, United StatesHQ checked Sep 3, 2026	201-500	214
	“PlusOne Company is a unique sales center, providing the highest conversion rates in the competitive Direct Response industry.” Source: company website · checked Sep 3, 2026
22	Dynamic BDCStrong evidence	Troy, MI, United StatesHQ checked Sep 3, 2026	501-1,000	190
	“Dynamic Marketing Services was created to cost effectively address the needs of Dealers who want to professionally handle their internet leads as well as their outbound sales and…” Source: company website · checked Sep 3, 2026
23	SigniaIndirect evidence	Westminster, CO, United StatesHQ checked Sep 3, 2026	201-500	182
	“Signia aims to provide marketing services to targeted business environments in the US.” Source: company website · checked Sep 3, 2026
24	ReveneerPartial evidence	Burlington, FL, United StatesHQ checked Sep 3, 2026	201-500	176
	“Reveneer has a proven, precisely engineered process for exceptional inside sales results-and we're passionate about using it to solve our customers' sales challenges.” Source: company website · checked Sep 3, 2026
25	S4 CommunicationsIndirect evidence	Houston, TX, United StatesHQ checked Sep 3, 2026	201-500	173
	“S4 Communications is a BPO provider with operations based out of Houston, Texas.” Source: company website · checked Sep 3, 2026

Showing 25 of 2,748 outbound sales agencies based in the United States

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Outbound sales agencies based in the United States at a glance

As of Sep 3, 2026

11-50Median size (employees)

New YorkLargest hub · 141 HQs

9,497Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

1,243

11-50

949

51-200

381

201-500

114

501-1,000

1,001-5,000

5,001-10,000

Verified emails by last verification

0–30

31–60

577

61–90

3,158

90–180

2,111

180+

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 agencies, 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 “outbound sales agencies”. 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 outbound sales agencies, 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, 5,941 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 3, 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 agencies by metro

Outbound sales agencies in New York141
Outbound sales agencies in Los Angeles81
Outbound sales agencies in Sheridan78
Outbound sales agencies in Miami71
Outbound sales agencies in Austin61
Outbound sales agencies in San Francisco57
Outbound sales agencies in Houston56

Frequently asked

How many outbound sales agencies are there based in the United States?

RevenueBase identified 2,748 outbound sales agencies 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?

Advanced Call Center Technologies, LLC, headquartered in Johnson City, tops this list with the largest team on record.

Which city has the most outbound sales agencies?

New York leads with 141 headquartered companies, followed by Los Angeles (81) and Sheridan (78).

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 5,941 verified decision-maker contacts tracked across these 2,748 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 3, 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.