Company lists · Data verified August 2026

Top 25 Outsourced sdr companies based in the United States

Name: Outsourced sdr companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,222 companies tracked

There are 1,222 outsourced sdr companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 18,357 professional contacts across them, including 3,030 with verified work emails and 3,687 with mobile numbers. New York is the largest hub.

This list covers outsourced sdr 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. Data current as of August 28, 2026.

1,222Companies

18,357Contacts tracked

3,030Verified emails

3,687Mobile numbers

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The 25 largest outsourced sdr companies based in the United States

Ranked by team size

Top 25 of 1,222 outsourced sdr companies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Memoryblue	San Jose, CA	501-1,000	851	247
2	Abstrakt Marketing Group	St Louis, MO	501-1,000	724	235
3	Telenet Marketing Solutions	Athens, GA	201-500	554	40
4	The Pipeline Group	San Jose, CA	201-500	518	101
5	Saleshive	Denver, CO	51-200	455	56
6	Alliance Pdms	Hurst, TX	51-200	428	6
7	The Lead Market	New York	51-200	390	58
8	Beyond Codes INC	Houston, TX	201-500	385	99
9	EBQ	Austin, TX	201-500	379	105
10	FUNNL	Philadelphia	201-500	351	1
11	By Appointment Only, Inc. BAO	Mesa, AZ	201-500	294	94
12	Rocket Connections	Detroit, MI	1,001-5,000	248	21
13	Marketjoy, INC	Pensacola, FL	51-200	225	42
14	Squeeze	Providence, UT	501-1,000	217	40
15	Belkins INC	Dover, DE	201-500	207	110
16	Sales Focus INC	North Charleston, SC	201-500	199	79
17	Dynamic BDC	Troy, MI	501-1,000	190	20
18	Reveneer	Fort Lauderdale, FL	201-500	176	105
19	Boom Demand	Lehi, UT	1,001-5,000	123	7
20	Growth CO	New York City, NY	51-200	114	7
21	Sales Partnerships, INC	Broomfield, CO	201-500	98	6
22	Inside Sales Solutions	St Petersburg, FL	51-200	91	30
23	Quality Customer Service & Sales Qcss	Deer Park, IL	201-500	80	16
24	Sales Matic	Brandon, FL	51-200	74	8
25	Leadium	Las Vegas, NV	51-200	64	2

Showing 25 of 1,222 outsourced sdr companies based in the United States

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Outsourced sdr companies based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 64 HQs

3,687Contacts with mobile numbers

30Emails re-verified in last 30 days

Companies by employee count

1-10

622

11-50

399

51-200

147

201-500

501-1,000

1,001-5,000

10001+

Outsourced sdr companies by metro

Metro	Companies
Outsourced sdr companies in New York	64
Outsourced sdr companies in Los Angeles	43
Outsourced sdr companies in Sheridan	37
Outsourced sdr companies in Austin	35
Outsourced sdr companies in San Francisco	28
Outsourced sdr companies in Miami	28
Outsourced sdr companies in Houston	21

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “outsourced sdr companies”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 30 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many outsourced sdr companies are there based in the United States?

There are 1,222 outsourced sdr companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Memoryblue, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most outsourced sdr companies?

New York leads with 64 headquartered companies, followed by Los Angeles (43) and Sheridan (37).

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 3,030 verified decision-maker contacts tracked across these 1,222 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.