Company lists · Data verified August 2026

Top 13 Email verification services based in the United States

Name: Email verification services 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 46 companies tracked

There are 46 email verification services headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 276 professional contacts across them, including 101 with verified work emails and 53 with mobile numbers. San Francisco is the largest hub.

This list covers email verification services 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.

46Companies

276Contacts tracked

101Verified emails

53Mobile numbers

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The 13 largest email verification services based in the United States

Ranked by team size

Top 13 of 46 email verification services 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	Zerobounce	Santa Barbara, CA	51-200	106	59
2	Kickbox	Dallas, TX	11-50	20	8
	RevenueBasePublisher of this directory	Boston, MA	n/a	n/a	Try free
3	Emailable	Miami, FL	11-50	14	6
4	Emailoversight	Glendale, CA	11-50	9	7
5	Freshaddress, LLC NOW Atdata	Dedham, MA	11-50	9	5
6	Scrubby Complete Email Validation	San Francisco, CA	1-10	8	2
7	Egressif	Sheridan, WY	1-10	7	4
8	Bounceban Verify Risky Emails Without Sending Messages	Dover, DE	11-50	5	2
9	Neverbounce By Zoominfo	Vancouver, WA	1-10	4	2
10	Verias	Boca Raton, FL	11-50	2	2
11	Xverify	Chicago, IL	1-10	2	2
12	Listmint	Detroit, MI	1-10	1	1
13	Archer	West Hollywood, CA	1-10	1	1

Showing 13 of 46 email verification services based in the United States

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Email verification services based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

San FranciscoLargest hub · 4 HQs

53Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

Email verification services by metro

Metro	Companies
Email verification services in San Francisco	4
Email verification services in New York	3
Email verification services in Chicago	2
Email verification services in Dover	2
Email verification services in Austin	1
Email verification services in Springfield	1
Email verification services in Las Vegas	1
Email verification services in Suwanee	1

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 “email verification services”, 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; 0 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 email verification services are there based in the United States?

There are 46 email verification services headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Zerobounce, headquartered in Santa Barbara, tops this list with the largest team on record.

Which city has the most email verification services?

San Francisco leads with 4 headquartered companies, followed by New York (3) and Chicago (2).

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 101 verified decision-maker contacts tracked across these 46 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.