Company lists · Data verified August 2026

Top 25 Cold email software companies based in the United States

Name: Cold email software 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 563 companies tracked

There are 563 cold email software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 5,611 professional contacts across them, including 1,254 with verified work emails and 1,104 with mobile numbers. New York is the largest hub.

This list covers cold email software 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.

563Companies

5,611Contacts tracked

1,254Verified emails

1,104Mobile numbers

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The 25 largest cold email software companies based in the United States

Ranked by team size

Top 25 of 563 cold email software 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	Lemlist	New York, NY	51-200	220	34
2	instantly.ai	Sheridan, WY	51-200	218	50
3	Artisan	San Francisco	51-200	211	37
4	Icontact	Morrisville, NC	51-200	136	40
5	B2B Rocket	Lewes, DE	51-200	135	23
6	selling.com	Newton, MA	51-200	126	20
7	Myadvice	Lehi, UT	51-200	123	59
8	UNIFY	New York, NY	51-200	111	41
9	success.ai	Sheridan, WY	51-200	107	11
10	Flodesk	San Francisco, CA	51-200	76	63
11	Landbase	San Francisco	11-50	62	34
12	Outplay	Wilmington, DE	51-200	51	6
13	Sendcrux Labs	Green Cove Springs, FL	51-200	47	3
14	GOZEN	Morris Plains, NJ	51-200	44	11
15	Intelliverse	Plano, GA	51-200	39	7
16	Madicalcare	Walled Lake, MI	11-50	39	1
17	Outbound Sales PRO	Boston, MA	51-200	34	15
18	CIRO	San Francisco, CA	11-50	33	6
19	Opensense	San Francisco, CA	11-50	32	22
20	Revenoid	San Francisco, CA	11-50	31	5
21	Ready For Social	Atlanta, GA	11-50	28	8
22	getsales.io	New York City	11-50	28	4
23	Growbots	San Francisco, CA	11-50	26	9
24	Mailshake	Austin, TX	11-50	19	10
25	Fusemind INC	Dallas, TX	51-200	18	9

Showing 25 of 563 cold email software companies based in the United States

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Cold email software companies based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 40 HQs

1,104Contacts with mobile numbers

9Emails re-verified in last 30 days

Companies by employee count

1-10

364

11-50

164

51-200

201-500

501-1,000

10001+

Cold email software companies by metro

Metro	Companies
Cold email software companies in New York	40
Cold email software companies in San Francisco	40
Cold email software companies in Sheridan	33
Cold email software companies in Austin	21
Cold email software companies in Los Angeles	17
Cold email software companies in New York City	15
Cold email software companies in Atlanta	11

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 “cold email software 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; 9 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 cold email software companies are there based in the United States?

There are 563 cold email software companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Lemlist, headquartered in New York, tops this list with the largest team on record.

Which city has the most cold email software companies?

New York leads with 40 headquartered companies, followed by San Francisco (40) and Sheridan (33).

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 1,254 verified decision-maker contacts tracked across these 563 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.