Company lists · Data refreshed October 2026

Top 25 Outbound email automation software companies based in the United States

Name: Outbound email automation software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 20, 2026 758 companies tracked

RevenueBase identified 758 company matches for outbound email automation software companies associated with the United States as of October 2026 and tracks 9,606 professional contacts across them, including 2,311 with verified work emails. New York is the largest hub.

This list covers company matches for outbound email automation software companies 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 October 20, 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 Oct 20, 2026 How this list was built

758Companies

9,606Contacts tracked

2,311Verified emails

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The 25 largest outbound email automation software companies based in the United States

Ranked by team size

Top 25 of 758 company matches for outbound email automation software companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 20, 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	Intuit Mailchimp	Exact match	Atlanta, GA, United StatesHQ recorded Oct 20, 2026	1,001-5,000	1,395 contacts →
	Exact match “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
2	Marigold	Exact match	Nashville, TN, United StatesHQ recorded Oct 20, 2026	201-500	612 contacts →
	Exact match “Marigold is a global marketing technology company focused on delivering relationship marketing solutions for growing organizations.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
3	instantly.ai	Exact match	Sheridan, WY, United StatesHQ recorded Oct 20, 2026	51-200	239 contacts →
	Exact match “All-in-one outreach platform for business growth.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
4	Act-On Software	Exact match	Portland, OR, United StatesHQ recorded Oct 20, 2026	201-500	217 contacts →
	Exact match “Act-On Software provides the innovative marketing automation platform for marketers who think big and act boldly.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
5	Sendpulse	Exact match	New York, United StatesHQ recorded Oct 20, 2026	51-200	178 contacts →
	Exact match “SendPulse is an AI-driven marketing platform that helps scaling businesses automate email and chatbot conversations.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
6	Rightwave	Exact match	San Jose, CA, United StatesHQ recorded Oct 20, 2026	51-200	163 contacts →
	Exact match “RightWave provides Marketing Automation Services for B2B companies.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
7	Cordial	Exact match	San Diego, CA, United StatesHQ recorded Oct 20, 2026	51-200	159 contacts →
	Exact match “Cordial automates billions of data-driven, cross-channel messages to create lifetime customer connections for leading companies.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
8	Icontact	Exact match	Morrisville, NC, United StatesHQ recorded Oct 20, 2026	51-200	144 contacts →
	Exact match “We believe powerful connections propel business growth.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
9	Mailerlite	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	51-200	135 contacts →
	Exact match “In 2005, we started as a web design agency, but we soon discovered email marketing and fell in love with it.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
10	BCC Software	Exact match	Rochester, NY, United StatesHQ recorded Oct 20, 2026	51-200	131 contacts →
	Exact match “Who are we?” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
11	CLICK	Exact match	Atlanta, GA, United StatesHQ recorded Oct 20, 2026	201-500	125 contacts →
	Exact match “Click is the only complete marketing technology solution that is natively integrated with Microsoft Dynamics CRM.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
12	Benchmark Email	Exact match	St. Louis, MO, United StatesHQ recorded Oct 20, 2026	51-200	117 contacts →
	Exact match “Benchmark helps busy marketers move faster and make a bigger impact with email.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
13	Myadvice	Exact match	Lehi, UT, United StatesHQ recorded Oct 20, 2026	51-200	116 contacts →
	Exact match “MyAdvice offers an AI-powered growth system that reduces cost and effort while driving revenue and producing valuable insights.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
14	Doppler	Exact match	San Antonio, TX, United StatesHQ recorded Oct 20, 2026	51-200	111 contacts →
	Exact match “Plataforma de Marketing Multicanal, simple y potenciado por IA.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
15	Emblue	Exact match	Carrollton, TX, United StatesHQ recorded Oct 20, 2026	51-200	107 contacts →
	Exact match “Our mission is to help companies communicate in a more relevant and personal way with their customers.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
16	Genesis Digital, LLC	Exact match	Las Vegas, NV, United StatesHQ recorded Oct 20, 2026	51-200	103 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
17	Aweber	Exact match	Doylestown, PA, United StatesHQ recorded Oct 20, 2026	51-200	90 contacts →
	Exact match “For over 20 years, AWeber has helped entrepreneurs and small business owners connect with their prospects and customers through powerfully-simple email marketing solutions.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
18	Flodesk	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	51-200	80 contacts →
	Exact match “Flodesk makes simple, intuitive software tools to help entrepreneurs grow their businesses.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
19	Constant Contact Lead GEN & CRM	Exact match	Gainesville, FL, United StatesHQ recorded Oct 20, 2026	1,001-5,000	73 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
20	Lead Liaison	Exact match	Dallas, TX, United StatesHQ recorded Oct 20, 2026	11-50	71 contacts →
	Exact match “Lead Liaison is an application development company that designs, develops, and sells cloud-based marketing and sales automation software.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
21	Litmus	Exact match	Cambridge, MA, United StatesHQ recorded Oct 20, 2026	51-200	65 contacts →
	Exact match “At Litmus, we know the importance of continuous innovation.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
22	Nimble	Exact match	Santa Monica, CA, United StatesHQ recorded Oct 20, 2026	11-50	61 contacts →
	Exact match “Nimble is your CRM for smarter email marketing, engagement, and business growth.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
23	Nutshell	Exact match	Ann Arbor, MI, United StatesHQ recorded Oct 20, 2026	11-50	60 contacts →
	Exact match “The time-saving CRM For sales and marketing teams who want to maximize efficiency and revenue, Nutshell is a CRM and marketing automation platform that saves time and accelerates…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
24	Mailmodo	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	59 contacts →
	Exact match “Mailmodo is a complete email marketing solution enabling users to create and send app-like interactive emails to improve email conversions.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
25	Agency Revolution	Exact match	Gardena, CA, United StatesHQ recorded Oct 20, 2026	11-50	58 contacts →
	Exact match “Agency Revolution provides insurance marketing automation software and websites for independent insurance agencies and brokerages In the U.S.” Recorded in the RevenueBase company graph · Oct 20, 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 “outbound email automation software companies”. 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 758 outbound email automation software companies based in the United States

See the full list, filter by size, metro and specialty, and access 2,311 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outbound email automation software companies based in the United States at a glance

As of Oct 20, 2026

24.1%Verified-email coverage

12.7Average contacts per company

1-10Median size (employees)

7.1%Largest-city concentration · New York

Oct 20, 2026Page data refreshed

Companies by employee count

1-10

445

11-50

232

51-200

201-500

501-1,000

1,001-5,000

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 758 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 “outbound email automation software companies” 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 2,311 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 October 20, 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.

Outbound email automation software companies 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 “outbound email automation software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 758 company matches for outbound email automation software companies associated with the United States as of October 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?

Intuit Mailchimp tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most outbound email automation software companies?

New York leads with 54 company records, followed by San Francisco (35) and Sheridan (32).

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 2,311 professional contacts with verified work emails tracked across these 758 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 October 20, 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.