Company lists · Data refreshed September 2026
Top 25 Newsletter automation platforms based in the United States
RevenueBase identified 398 newsletter automation platforms headquartered in the United States as of September 2026 and tracks 7,778 professional contacts across them, including 2,378 with verified work emails. New York is the largest hub.
This list covers newsletter automation platforms 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 29, 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.
The 25 largest newsletter automation platforms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 863 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 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 588 contacts → | ||||
Indirect evidence “Optimove, the creator of Positionless Marketing, frees marketing teams from the limitations of fixed roles, giving every marketer the power to execute any marketing task instantly…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 572 contacts → | ||||
Partial 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 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 295 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 232 contacts → | ||||
Indirect evidence “Lob automates and personalizes direct mail at any scale, bringing the speed and features you expect from your digital channels to direct mail for the first time.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 180 contacts → | ||||
Partial evidence “SendPulse is an AI-driven marketing platform that helps scaling businesses automate email and chatbot conversations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 163 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 137 contacts → | ||||
Indirect evidence “We believe powerful connections propel business growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 122 contacts → | ||||
Indirect evidence “In 2005, we started as a web design agency, but we soon discovered email marketing and fell in love with it.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 115 contacts → | ||||
Indirect evidence “Benchmark helps busy marketers move faster and make a bigger impact with email.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 106 contacts → | ||||
Indirect evidence “Plataforma de Marketing Multicanal, simple y potenciado por IA.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 105 contacts → | ||||
Indirect evidence “Our mission is to help companies communicate in a more relevant and personal way with their customers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 90 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 88 contacts → | ||||
Indirect evidence “Mailmodo is a complete email marketing solution enabling users to create and send app-like interactive emails to improve email conversions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 83 contacts → | ||||
Indirect evidence “ExactTarget is now the Salesforce Marketing Cloud - Visit them here: http://sforce.co/2nnCQU7 The Salesforce Marketing Cloud is the world’s most powerful digital marketing 1:1…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 80 contacts → | ||||
Indirect evidence “Flodesk makes simple, intuitive software tools to help entrepreneurs grow their businesses.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 72 contacts → | ||||
Partial evidence “Stripo is an online drag-n-drop and HTML email platform.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 70 contacts → | ||||
Indirect evidence “At Litmus, we know the importance of continuous innovation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 69 contacts → | ||||
Indirect evidence “Email & SMS for online brands that need the tools & coaching to grow sales.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 66 contacts → | ||||
Indirect evidence “CRAFTSMAN+ is a creative technology company that empowers marketers and brands to achieve massive creative wins.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 60 contacts → | ||||
Indirect evidence “Nimble is your CRM for smarter email marketing, engagement, and business growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 59 contacts → | ||||
Strong evidence “AiTrillion is a sales and marketing automation platform built to grow E-commerce via powerful modules to maximize customer engagement and retention.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 56 contacts → | ||||
Indirect evidence “Email for developers” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 47 contacts → | ||||
Partial evidence “Letterhead is the Newsletter Execution System built for teams that want to do more with email.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 46 contacts → | ||||
Indirect evidence “Truly unified email, SMS, reviews, and forms.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: newsletter automation platforms. 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 newsletter automation platforms.
- Partial evidence
- Its own public description names part of newsletter automation platforms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name newsletter automation platforms. 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 398 newsletter automation platforms based in the United States
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Newsletter automation platforms based in the United States at a glance
As of Sep 29, 2026Companies by employee count
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 398 companies.
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 newsletter automation platforms, 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 “newsletter automation platforms”. 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 newsletter automation platforms), 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 newsletter automation platforms, 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, 2,378 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 29, 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.
Newsletter automation platforms 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 newsletter automation platforms, 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 newsletter automation platforms are there based in the United States?
RevenueBase identified 398 newsletter automation platforms 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?
Activecampaign, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most newsletter automation platforms?
New York leads with 37 headquartered companies, followed by San Francisco (22) and Austin (17).
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 2,378 verified decision-maker contacts tracked across these 398 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 29, 2026.
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Newsletter automation platforms by geography
- Newsletter automation platforms based in London, United Kingdom
- Newsletter automation platforms based in New York, United States
- Newsletter automation platforms based in Australia
- Newsletter automation platforms based in Brazil
- Newsletter automation platforms based in Canada
- Newsletter automation platforms based in France
- Newsletter automation platforms based in Germany
- Newsletter automation platforms based in India
- Newsletter automation platforms based in the Netherlands
- Newsletter automation platforms based in Spain
- Newsletter automation platforms based in the United Kingdom
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.
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