Company lists · Data refreshed September 2026

Top 25 Email marketing companies based in the United States

Name: Email marketing 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 1,752 companies tracked

RevenueBase identified 1,752 email marketing companies headquartered in the United States as of September 2026 and tracks 19,539 professional contacts across them, including 5,927 with verified work emails and 6,088 with mobile numbers. New York is the largest hub.

This list covers email marketing 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

1,752Companies

19,539Contacts tracked

5,927Verified emails

6,088Mobile numbers

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The 25 largest email marketing companies based in the United States

Ranked by team size

Top 25 of 1,752 email marketing 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 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	Data Axle	Indirect evidence	Dallas, TX, United States	1,001-5,000	1,082 contacts →
	Indirect evidence “Data Axle helps clients create a foundation of clean data, find new leads, develop winning strategies, design beautiful campaigns, and can handle all day-to-day execution needs” 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	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
5	Sg360	Indirect evidence	Wheeling, IL, United States	501-1,000	473 contacts →
	Indirect evidence “sg360° can help you identify and connect with your best prospects 1:1, both offline and on.” 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	marketing.com	Partial evidence	Eureka, MO, United States	1,001-5,000	308 contacts →
	Partial evidence “From click to print and everything in between, we’re not changing marketing, just how it’s done.” Source: RevenueBase Database · checked Sep 1, 2026
8	Listrak	Partial evidence	Lititz, PA, United States	201-500	298 contacts →
	Partial 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
9	Aspen Marketing	Partial evidence	Irving, TX, United States	5,001-10,000	281 contacts →
	Partial evidence “Aspen Marketing Services was acquired by Epsilon, an all-encompassing global marketing innovator, in 2011.” Source: RevenueBase Database · checked Sep 1, 2026
10	Outboundengine	Partial evidence	Seattle, WA, United States	201-500	183 contacts →
	Partial evidence “We believe every business deserves great marketing.” Source: RevenueBase Database · checked Sep 1, 2026
11	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
12	Helloworld, INC	Partial evidence	Chicago, IL, United States	201-500	137 contacts →
	Partial evidence “HelloWorld is a digital marketing solutions company working with the world’s leading brands.” Source: RevenueBase Database · checked Sep 1, 2026
13	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
14	United Direct Solutions	Indirect evidence	Louisville, KY, United States	201-500	119 contacts →
	Indirect evidence “United Direct Solutions provides clients with the most effective methods to connect, engage and communicate with their audiences.” Source: RevenueBase Database · checked Sep 1, 2026
15	Trum PIA	Partial evidence	La Palma, CA, United States	51-200	110 contacts →
	Partial evidence “Trum·pia was founded in 2006 and has long been ranked #1 in SMS marketing by Forbes because of our ease-of-use, prompt support, and one-of-a-kind automation that scales your…” Source: RevenueBase Database · checked Sep 1, 2026
16	Midwest Direct	Indirect evidence	Pittsburgh, PA, United States	201-500	102 contacts →
	Indirect evidence “For over 40 years, Midwest Direct has been focused on helping marketers deliver engaging messages.” Source: RevenueBase Database · checked Sep 1, 2026
17	Upswell	Partial evidence	Marietta, GA, United States	51-200	85 contacts →
	Partial evidence “At UpSwell Marketing, we don’t just send mail-we deliver results.” Source: RevenueBase Database · checked Sep 1, 2026
18	Phoenix Innovate	Partial evidence	Anderson, IN, United States	51-200	80 contacts →
	Partial evidence “For organizations of all sizes and types, Phoenix Innovate is a marketing innovator that can be counted on to use its passion, vision and creativity to identify and solve business…” Source: RevenueBase Database · checked Sep 1, 2026
19	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
20	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
21	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
22	Trend Capital Holdings, INC	Indirect evidence	Vancouver, WA, United States	51-200	62 contacts →
	Indirect evidence “Trend Capital is a leader in list management and lead generation.” Source: RevenueBase Database · checked Sep 1, 2026
23	Cross Country Computer	Partial evidence	East Islip, NY, United States	51-200	59 contacts →
	Partial evidence “Marketing challenges in a rising cost environment add to an already complex dynamic.” Source: RevenueBase Database · checked Sep 1, 2026
24	Giant Partners America's 1 Data Driven Marketing Agency	Indirect evidence	Thousand Oaks, CA, United States	51-200	58 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 1, 2026
25	Navistone	Indirect evidence	Cincinnati, OH, United States	51-200	57 contacts →
	Indirect evidence “In a world of closed ecosystems and rising customer expectations, NaviStone helps growth-minded marketers break through the noise, unlock untapped audiences, and build meaningful…” 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 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 companies.
Partial evidence: Its own public description names part of email marketing 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 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 1,752 email marketing companies based in the United States

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Email marketing companies based in the United States at a glance

As of Sep 1, 2026

30.3%Verified-email coverage

31.2%Mobile-number coverage

11.2Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · New York

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

1,032

11-50

496

51-200

163

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 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 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 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 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, 5,927 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 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 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 companies are there based in the United States?

RevenueBase identified 1,752 email marketing 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 companies?

New York leads with 108 headquartered companies, followed by Los Angeles (43) and Chicago (40).

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 5,927 verified decision-maker contacts tracked across these 1,752 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.