Company lists · Data refreshed September 2026

Top 25 Email marketing automation companies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 1,209 companies tracked

RevenueBase identified 1,209 email marketing automation companies headquartered in the United States as of September 2026 and tracks 15,656 professional contacts across them, including 4,964 with verified work emails and 4,330 with mobile numbers. New York is the largest hub.

This list covers email marketing automation 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

1,209Companies

15,656Contacts tracked

4,964Verified emails

4,330Mobile numbers

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The 25 largest email marketing automation companies based in the United States

Ranked by team size

Top 25 of 1,209 email marketing automation companies based in the United States, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to email marketing automation companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Intuit Mailchimp	Partial evidence	Oakland, CA, United States	1,001-5,000	1,557 contacts →
	Partial evidence “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Source: RevenueBase Database · checked Sep 1, 2026
2	Activecampaign	Partial evidence	Chicago, IL, United States	1,001-5,000	852 contacts →
	Partial evidence “ActiveCampaign is the AI-first autonomous marketing platform built to transform how marketers, agencies, and entrepreneurs work.” Source: RevenueBase Database · checked Sep 1, 2026
3	Marigold	Partial evidence	Nashville, TN, United States	201-500	818 contacts →
	Partial evidence “Marigold is a global marketing technology company focused on delivering relationship marketing solutions for growing organizations.” Source: RevenueBase Database · checked Sep 1, 2026
4	Adobe Marketo	Indirect evidence	Atlanta, GA, United States	1,001-5,000	570 contacts →
	Indirect evidence “Adobe Marketo Engage offers the leading Engagement Platform that empowers marketers to build brand value, grow revenue, and prove impact.” Source: RevenueBase Database · checked Sep 1, 2026
5	Dotdigital	Partial evidence	New York, NY, United States	201-500	488 contacts →
	Partial evidence “Dotdigital is a marketing personalization platform that helps you connect with your customers on the channels they know and love.” Source: RevenueBase Database · checked Sep 1, 2026
6	customer.io	Indirect evidence	Portland, OR, United States	201-500	445 contacts →
	Indirect evidence “Create personalized customer journeys that engage and convert with our versatile customer engagement platform.” Source: RevenueBase Database · checked Sep 1, 2026
7	Listrak	Strong evidence	Lititz, PA, United States	201-500	298 contacts →
	Strong 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: RevenueBase Database · checked Sep 1, 2026
8	Tangence	Partial evidence	San Jose, CA, United States	201-500	205 contacts →
	Partial evidence “Tangence accelerates marketing execution for companies more efficiently than in-house teams or other agencies.” Source: RevenueBase Database · checked Sep 1, 2026
9	Remarkable AI	Indirect evidence	New York, NY, United States	51-200	195 contacts →
	Indirect evidence “Our mission is to solve customer experience.” Source: RevenueBase Database · checked Sep 1, 2026
10	Sendpulse	Strong evidence	New York, United States	51-200	181 contacts →
	Strong 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: RevenueBase Database · checked Sep 1, 2026
11	Stirista	Partial evidence	San Antonio, TX, United States	51-200	163 contacts →
	Partial 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: RevenueBase Database · checked Sep 1, 2026
12	Cordial	Indirect evidence	San Diego, CA, United States	51-200	154 contacts →
	Indirect evidence “Cordial automates billions of data-driven, cross-channel messages to create lifetime customer connections for leading companies.” Source: RevenueBase Database · checked Sep 1, 2026
13	Icontact	Indirect evidence	Morrisville, NC, United States	51-200	136 contacts →
	Indirect evidence “We believe powerful connections propel business growth.” Source: RevenueBase Database · checked Sep 1, 2026
14	CLICK	Partial evidence	Atlanta, GA, United States	201-500	134 contacts →
	Partial evidence “Click is the only complete marketing technology solution that is natively integrated with Microsoft Dynamics CRM.” Source: RevenueBase Database · checked Sep 1, 2026
15	Myadvice	Strong evidence	Lehi, UT, United States	51-200	123 contacts →
	Strong evidence “The MyAdvice Success Center is your AI-driven engine that combines smart marketing, intelligent automation, and operational tools to help you add revenue without increasing costs.” Source: RevenueBase Database · checked Sep 1, 2026
16	Growthloop	Partial evidence	New York City, NY, United States	51-200	98 contacts →
	Partial evidence “GrowthLoop is a Compound Marketing Engine that drives compound growth by accelerating the marketing cycle, using Agentic AI powered by your enterprise cloud data.” Source: RevenueBase Database · checked Sep 1, 2026
17	Aweber	Strong evidence	Doylestown, PA, United States	51-200	93 contacts →
	Strong 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: RevenueBase Database · checked Sep 1, 2026
18	Flodesk	Indirect evidence	San Francisco, CA, United States	51-200	76 contacts →
	Indirect evidence “Flodesk makes simple, intuitive software tools to help entrepreneurs grow their businesses.” Source: RevenueBase Database · checked Sep 1, 2026
19	Constant Contact Lead GEN & CRM	Strong evidence	Gainesville, FL, United States	1,001-5,000	71 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 1, 2026
20	Marrina Decisions	Partial evidence	Santa Clara, CA, United States	51-200	69 contacts →
	Partial evidence “WE ARE MARRINA One of the most time-consuming yet highly-valuable aspects of the marketer’s role is Email Production.” Source: RevenueBase Database · checked Sep 1, 2026
21	PRIVY	Partial evidence	Boston, MA, United States	51-200	68 contacts →
	Partial evidence “Email & SMS for online brands that need the tools & coaching to grow sales.” Source: RevenueBase Database · checked Sep 1, 2026
22	Retainiq	Partial evidence	Wilmington, DE, United States	51-200	65 contacts →
	Partial evidence “RetainIQ enables brands to personalize their Email & MMS creatives based on customers' actions, location, weather, and loyalty information.” Source: RevenueBase Database · checked Sep 1, 2026
23	Alchemy Worx	Strong evidence	New York, NY, United States	51-200	63 contacts →
	Strong evidence “Since 2001, Alchemy Worx has provided a full-service solution, with best-in-class email marketing, paid social, and SMS support, to e-commerce and enterprise-level companies.” Source: RevenueBase Database · checked Sep 1, 2026
24	Engagebay	Partial evidence	Wilmington, DE, United States	51-200	57 contacts →
	Partial evidence “EngageBay offers innovative AI-powered marketing and sales tools designed for small to medium-sized businesses.” Source: RevenueBase Database · checked Sep 1, 2026
25	Maxa Designs	Partial evidence	Los Angeles, CA, United States	51-200	56 contacts →
	Partial evidence “MAXA is the real estate and mortgage industry's #1 marketing center.” Source: RevenueBase Database · checked Sep 1, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: email marketing automation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names email marketing automation companies.
Partial evidence: Its own public description names part of email marketing automation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name email marketing automation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,209 email marketing automation companies based in the United States

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

As of Sep 1, 2026

31.7%Verified-email coverage

27.7%Mobile-number coverage

12.9Average contacts per company

1-10Median size (employees)

7.0%Largest-city concentration · New York

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

750

11-50

330

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 automation companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “email marketing automation companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names email marketing automation companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among email marketing automation 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 its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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, 4,964 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.

Email marketing automation companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names email marketing automation companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 1,209 email marketing automation companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

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 automation companies?

New York leads with 85 headquartered companies, followed by San Francisco (38) and Los Angeles (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 4,964 verified decision-maker contacts tracked across these 1,209 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 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 Smart Search, 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.