Company lists · Data refreshed September 2026

Top 25 Client acquisition outsourcing services based in the United States

Name: Client acquisition outsourcing services 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 3,352 companies tracked

RevenueBase identified 3,352 company matches for client acquisition outsourcing services associated with the United States as of September 2026 and tracks 45,377 professional contacts across them, including 6,227 with verified work emails. New York is the largest hub.

This list covers company matches for client acquisition outsourcing services 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

3,352Companies

45,377Contacts tracked

6,227Verified emails

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

Ranked by team size

Top 25 of 3,352 company matches for client acquisition outsourcing services 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	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
2	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
3	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
4	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
5	Manlitics B2B Ites	Exact match	New York, United StatesHQ recorded Sep 27, 2026	501-1,000	750 contacts →
	Exact match “In an ERA of new and emerging digital mediums, we align our core expertise of today’s ever-changing technology with a clear understanding of traditional marketing methods without…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	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
7	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
8	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
9	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
10	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
11	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
12	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
13	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
14	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
15	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
16	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
17	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
18	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
19	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
20	FUNNL	Exact match	Philadelphia, United StatesHQ recorded Sep 27, 2026	201-500	349 contacts →
	Exact match “FunnL was built on a revolutionary idea: B2B companies don’t need more leads-they need more qualified sales meetings with decision-makers.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Jumpcrew	Exact match	Nashville, TN, United StatesHQ recorded Sep 27, 2026	201-500	339 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Cydcor	Exact match	Agoura Hills, CA, United StatesHQ recorded Sep 27, 2026	51-200	328 contacts →
	Exact match “We create opportunity: For our clients, our team, and the future.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Vereigen Media	Exact match	Austin, TX, United StatesHQ recorded Sep 27, 2026	201-500	309 contacts →
	Exact match “Vereigen Media is a U.S-based B2B demand generation company that supports organizations connect with data-driven lead generation and audience engagement solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	By Appointment Only, Inc. BAO	Exact match	Chelmsford, MA, United StatesHQ recorded Sep 27, 2026	201-500	291 contacts →
	Exact match “The market knows us as the leader in appointment setting.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Calltend INC	Exact match	Los Angeles, TX, United StatesHQ recorded Sep 27, 2026	51-200	289 contacts →
	Exact match “Current Vertical Focus: Real Estate - Lead Generation, Lead Conversion, Lead Qualification, Agent Recruiting Mortgage - Lead Conversion, Lead Qualification Insurance - Lead…” 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 services”. 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 3,352 client acquisition outsourcing services based in the United States

See the full list, filter by size, metro and specialty, and access 6,227 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 27, 2026

13.7%Verified-email coverage

13.5Average contacts per company

1-10Median size (employees)

6.1%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

1,825

11-50

1,044

51-200

349

201-500

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 3,352 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 services” 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 6,227 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 services 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 services”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 3,352 company matches for client acquisition outsourcing services 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?

Marketstar 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 services?

New York leads with 205 company records, followed by Sheridan (93) and Los Angeles (89).

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 6,227 professional contacts with verified work emails tracked across these 3,352 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.