Company lists · Data refreshed September 2026

Top 25 Email marketing software companies based in the United States

There are 602 email marketing software companies headquartered in the United States (RevenueBase, September 2026). RevenueBase tracks 8,758 professional contacts across them, including 2,421 with verified work emails and 2,571 with mobile numbers. New York is the largest hub.

This list covers email marketing 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. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 1, 2026.

602Companies
8,758Contacts tracked
2,421Verified emails
2,571Mobile numbers
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The 25 largest email marketing software companies based in the United States

Ranked by team size
Top 25 of 602 email marketing software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 1, 2026. Evidence rates how directly each company's own description names email marketing software companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContactsVerified emails
1
Intuit MailchimpPartial evidence

“The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.”

Source: company website · checked Sep 1, 2026
Oakland, CA, United States1,001-5,0001,557474
2
MarigoldPartial evidence

“Marigold is a global marketing technology company focused on delivering relationship marketing solutions for growing organizations.”

Source: company website · checked Sep 1, 2026
Nashville, TN, United States201-500818147
3
ListrakPartial evidence

“Listrak is the person-first marketing automation platform that seamlessly integrates data, identity, and cross-channel messaging to power hyper-personalized customer experiences.”

Source: company website · checked Sep 1, 2026
Lititz, PA, United States201-500298173
4
SendpulseStrong evidence

“SendPulse is an all-in-one automation platform that specializes in email, SMS, and chatbot marketing and offers a complete toolkit for creating landing pages, developing online…”

Source: company website · checked Sep 1, 2026
New York, United States51-20018174
5
StiristaPartial evidence

“Stirista is the only company that combines data, email, and digital execution to help clients acquire and retain customers by creating a data-driven, repeatable, and scalable…”

Source: company website · checked Sep 1, 2026
San Antonio, TX, United States51-200163113
6
IcontactIndirect evidence

“We believe powerful connections propel business growth.”

Source: company website · checked Sep 1, 2026
Morrisville, NC, United States51-20013640
7
CLICKPartial evidence

“Click is the only complete marketing technology solution that is natively integrated with Microsoft Dynamics CRM.”

Source: company website · checked Sep 1, 2026
Atlanta, GA, United States201-50013463
8
BCC SoftwareIndirect evidence

“Who are we?”

Source: company website · checked Sep 1, 2026
Rochester, NY, United States51-20012578
9
MailerliteStrong evidence

“In 2005, we started as a web design agency, but we soon discovered email marketing and fell in love with it.”

Source: company website · checked Sep 1, 2026
San Francisco, CA, United States51-20011864
10
Benchmark EmailPartial evidence

“Benchmark helps busy marketers move faster and make a bigger impact with email.”

Source: company website · checked Sep 1, 2026
St Louis, MO, United States51-20011647
11
Genesis Digital, LLCStrong evidence

“Genesis Digital empowers entrepreneurs and small business owners to achieve financial freedom with affordable and easy-to-use marketing and sales automation software, and a…”

Source: company website · checked Sep 1, 2026
Las Vegas, NV, United States51-20010457
12
AweberStrong evidence

“For over 20 years, AWeber has helped entrepreneurs and small business owners connect with their prospects and customers through powerfully-simple email marketing solutions.”

Source: company website · checked Sep 1, 2026
Doylestown, PA, United States51-2009326
13
Site ImpactPartial evidence

“Site Impact is your trusted, turnkey partner that empowers agencies with one of the country's largest, data-driven, multichannel marketing solutions.”

Source: company website · checked Sep 1, 2026
Coral Springs, FL, United States51-2008047
14
FlodeskPartial evidence

“Flodesk makes simple, intuitive software tools to help entrepreneurs grow their businesses.”

Source: company website · checked Sep 1, 2026
San Francisco, CA, United States51-2007663
15
LitmusIndirect evidence

“At Litmus, we know the importance of continuous innovation.”

Source: company website · checked Sep 1, 2026
San Mateo, CA, United States51-2007117
16

“SharpSpring is a full-funnel marketing and sales automation platform that unites marketing and sales teams to launch and track targeted campaigns and personalize every interaction…”

Source: company website · checked Sep 1, 2026
Gainesville, FL, United States1,001-5,0007111
17
Marrina DecisionsPartial evidence

“WE ARE MARRINA One of the most time-consuming yet highly-valuable aspects of the marketer’s role is Email Production.”

Source: company website · checked Sep 1, 2026
Santa Clara, CA, United States51-2006939
18
PRIVYPartial evidence

Email & SMS for online brands that need the tools & coaching to grow sales.”

Source: company website · checked Sep 1, 2026
Boston, MA, United States51-2006841
19
EngagebayPartial evidence

“EngageBay offers innovative AI-powered marketing and sales tools designed for small to medium-sized businesses.”

Source: company website · checked Sep 1, 2026
Wilmington, DE, United States51-2005710
20
InboxarmyStrong evidence

“InboxArmy is an elite, full-service email marketing agency offering the full spectrum of email marketing services, including- Full-Service Campaign Management - Email Template…”

Source: company website · checked Sep 1, 2026
Grapevine, TX, United States51-2005020
21
Sendcrux LabsPartial evidence

“Sendcrux labs is building sales and marketing automation tools to help organisations to achieve the following goals cost-effectively- Boost revenues- Lead Generation- Nurture…”

Source: company website · checked Sep 1, 2026
Green Cove Springs, FL, United States51-200473
22
SendlanePartial evidence

“Truly unified email, SMS, reviews, and forms.”

Source: company website · checked Sep 1, 2026
San Diego, CA, United States51-2004629
23
ExperiturePartial evidence

“Experiture empowers businesses to harness the full potential of their customer data for marketing through our leading-edge Customer Engagement Platform.”

Source: company website · checked Sep 1, 2026
Brooklyn, NY, United States51-2004026
24
IPOSTPartial evidence

“iPost is a leading email-sending platform purpose-built to solve real challenges in highly regulated and other data- and content-sensitive industries, including gaming, legal…”

Source: company website · checked Sep 1, 2026
San Mateo, CA, United States51-2003815
25
WhatcountsStrong evidence

“WhatCounts is an email marketing and personalization platform empowering marketers to elevate customer targeting and daily email strategy and execution.”

Source: company website · checked Sep 1, 2026
Seattle, WA, United States51-2003710

Showing 25 of 602 email marketing software companies based in the United States

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Email marketing software companies based in the United States at a glance

As of Sep 1, 2026
1-10Median size (employees)
New YorkLargest hub · 44 HQs
2,571Contacts with mobile numbers
Sep 1, 2026Data refreshed

Companies by employee count

1-10
308
11-50
200
51-200
65
201-500
20
501-1,000
2
1,001-5,000
4
10001+
1

Email marketing software companies by metro

MetroCompanies
Email marketing software companies in New York44
Email marketing software companies in San Francisco19
Email marketing software companies in Chicago18
Email marketing software companies in Miami17
Email marketing software companies in Los Angeles14
Email marketing software companies in Austin14
Email marketing software companies in Atlanta11
Email marketing software companies in Sheridan10

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among email marketing software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “email marketing software companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among email marketing software companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself.
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 listed company carries at least one verified work email, 2,421 across the full list. 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 1, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

How many email marketing software companies are there based in the United States?

There are 602 email marketing software companies headquartered in the United States as of September 2026 (RevenueBase).

What is the largest company on this list?

Intuit Mailchimp, headquartered in Oakland, tops this list with the largest team on record.

Which city has the most email marketing software companies?

New York leads with 44 headquartered companies, followed by San Francisco (19) and Chicago (18).

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 2,421 verified decision-maker contacts tracked across these 602 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 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.