Company lists · Data refreshed September 2026

Top 25 Client acquisition outsourcing companies based in the United States

Name: Client acquisition 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 27, 2026 3,535 companies tracked

RevenueBase identified 3,535 company matches for client acquisition outsourcing companies associated with the United States as of September 2026 and tracks 72,463 professional contacts across them, including 9,316 with verified work emails. New York is the largest hub.

This list covers company matches for client acquisition outsourcing companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

3,535Companies

72,463Contacts tracked

9,316Verified emails

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The 25 largest client acquisition outsourcing companies based in the United States

Ranked by team size

Top 25 of 3,535 company matches for client acquisition outsourcing companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	IBEX	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	10001+	15,457 contacts →
	Exact match “ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Marketstar	Exact match	Ogden, UT, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,446 contacts →
	Exact match “MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Full Potential Solutions	Exact match	Waltham, MA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,238 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Credico	Exact match	Chicago, IL, United StatesHQ recorded Sep 27, 2026	n/a	1,188 contacts →
	Exact match “Credico is the world's leading face-to-face customer acquisition agency, helping our clients attract and retain loyal customers.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Cience	Exact match	Miami, FL, United StatesHQ recorded Sep 27, 2026	201-500	1,068 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Peak Support	Exact match	Cambridge, MA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,036 contacts →
	Exact match “Peak Support: A Ubiquity Company is a business process outsourcing (BPO) company growing dedicated to providing exceptional support to high-growth companies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Inktel Contact Center Solutions	Exact match	Doral, FL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	902 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Infuse	Exact match	Boca Raton, FL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	796 contacts →
	Exact match “Demand Excellence Delivered We are INFUSE, a global B2B demand and revenue marketing performance company.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Salelytics	Exact match	Appleton, WI, United StatesHQ recorded Sep 27, 2026	1,001-5,000	776 contacts →
	Exact match “Salelytics is now MarketSource.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Abstrakt Marketing Group	Exact match	St. Louis, MO, United StatesHQ recorded Sep 27, 2026	501-1,000	724 contacts →
	Exact match “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Salebuild	Exact match	Redwood City, CA, United StatesHQ recorded Sep 27, 2026	n/a	708 contacts →
	Exact match “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Flexisales INC	Exact match	Las Vegas, NV, United StatesHQ recorded Sep 27, 2026	201-500	697 contacts →
	Exact match “Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Movingdneedle Pvt. LTD	Exact match	Sterling Heights, MI, United StatesHQ recorded Sep 27, 2026	51-200	528 contacts →
	Exact match “movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Callbox INC	Exact match	Encino, CA, United StatesHQ recorded Sep 27, 2026	201-500	499 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	AWL	Exact match	Austin, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	483 contacts →
	Exact match “AWL was founded in 2005 and is the nation's premier Customer Acquisition Marketing business focused on the insurance industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Infoanalytica, INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 27, 2026	201-500	482 contacts →
	Exact match “InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Demandshore	Exact match	San Francisco, CA, United StatesHQ recorded Sep 27, 2026	501-1,000	478 contacts →
	Exact match “About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Saleshive	Exact match	Denver, CO, United StatesHQ recorded Sep 27, 2026	51-200	455 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Marketone International	Exact match	Waltham, MA, United StatesHQ recorded Sep 27, 2026	201-500	431 contacts →
	Exact match “MarketOne is a global demand generation agency.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Alliance Pdms	Exact match	Hurst, TX, United StatesHQ recorded Sep 27, 2026	51-200	428 contacts →
	Exact match “Alliance is a domestically operated, internationally recognized professional contact center specializing in lead generation and appointment setting.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Smart Circle International	Exact match	Newport Beach, CA, United StatesHQ recorded Sep 27, 2026	51-200	426 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Touchstone Communications	Exact match	Fort Worth, TX, United StatesHQ recorded Sep 27, 2026	501-1,000	393 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Amarketforce	Exact match	San Jose, CA, United StatesHQ recorded Sep 27, 2026	201-500	391 contacts →
	Exact match “aMarketForce is a full-scale B2B Contact Database & Demand Generation services company.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Beyond Codes INC	Exact match	Simi Valley, CA, United StatesHQ recorded Sep 27, 2026	201-500	380 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	EBQ	Exact match	Austin, TX, United StatesHQ recorded Sep 27, 2026	201-500	377 contacts →
	Exact match “EBQ is an outsourced sales and marketing organization that provides services to help companies scale.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “client acquisition outsourcing companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 3,535 client acquisition outsourcing companies based in the United States

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Client acquisition outsourcing companies based in the United States at a glance

As of Sep 27, 2026

12.9%Verified-email coverage

20.5Average contacts per company

11-50Median size (employees)

5.9%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

1,705

11-50

1,222

51-200

433

201-500

120

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 3,535 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “client acquisition outsourcing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 9,316 professional contacts with verified work emails across the full matched dataset. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Client acquisition outsourcing companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “client acquisition outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many client acquisition outsourcing companies are there based in the United States?

RevenueBase identified 3,535 company matches for client acquisition outsourcing companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

IBEX tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most client acquisition outsourcing companies?

New York leads with 209 company records, followed by Austin (95) and Los Angeles (90).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 9,316 professional contacts with verified work emails tracked across these 3,535 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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.