Company lists · Data refreshed September 2026

Top 25 AI marketing automation companies based in the United States

Name: AI 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 16, 2026 2,825 companies tracked

RevenueBase identified 2,825 AI marketing automation companies headquartered in the United States as of September 2026 and tracks 71,605 professional contacts across them, including 29,811 with verified work emails. New York is the largest hub.

This list covers AI 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 16, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

2,825Companies

71,605Contacts tracked

29,811Verified emails

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

Ranked by team size

Top 25 of 2,825 AI marketing automation companies based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to AI 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	Hubspot	Indirect evidence	Cambridge, MA, United StatesHQ checked Sep 16, 2026	5,001-10,000	11,077 contacts →
	Indirect evidence “HubSpot is a leading agentic customer platform that provides software and support to help businesses grow better.” Source: RevenueBase Database · checked Sep 16, 2026
2	Klaviyo	Indirect evidence	Boston, MA, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,789 contacts →
	Indirect evidence “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Source: RevenueBase Database · checked Sep 16, 2026
3	Zeta Global	Partial evidence	New York, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,595 contacts →
	Partial evidence “At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.” Source: RevenueBase Database · checked Sep 16, 2026
4	THRYV	Partial evidence	Dallas, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,412 contacts →
	Partial evidence “Thryv is an AI-powered platform built to help small businesses get found, win customers, and drive repeat sales.” Source: RevenueBase Database · checked Sep 16, 2026
5	BRAZE	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,142 contacts →
	Indirect evidence “Braze is the leading customer engagement platform that empowers brands to Be Absolutely Engaging.™ Braze allows any marketer to collect and take action on any amount of data from…” Source: RevenueBase Database · checked Sep 16, 2026
6	Sitecore	Indirect evidence	Manchester, NH, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,727 contacts →
	Indirect evidence “Sitecore creates digital experiences so powerful they connect the world.” Source: RevenueBase Database · checked Sep 16, 2026
7	Optimizely	Strong evidence	New York, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,584 contacts →
	Strong evidence “Optimizely is the AI platform for marketing, built for the experience-makers who shape how brands show up in the world.” Source: RevenueBase Database · checked Sep 16, 2026
8	Localiq	Strong evidence	New York, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,534 contacts →
	Strong evidence “Grow your business with digital marketing powered by AI and local expertise.” Source: RevenueBase Database · checked Sep 16, 2026
9	Intuit Mailchimp	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,483 contacts →
	Partial evidence “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Source: RevenueBase Database · checked Sep 16, 2026
10	6sense	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,443 contacts →
	Indirect evidence “6sense is on a mission to revolutionize the way B2B organizations create revenue by predicting customers most likely to buy and recommending the best course of action to engage…” Source: RevenueBase Database · checked Sep 16, 2026
11	Centro	Strong evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	501-1,000	1,178 contacts →
	Strong evidence “Basis Technologies is a global provider of workflow automation, intelligence and programmatic trading software for the marketing enterprise.” Source: RevenueBase Database · checked Sep 16, 2026
12	Demandscience	Indirect evidence	Boston, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,087 contacts →
	Indirect evidence “With proprietary data and omni-channel activation like events, content, programmatic and chat, we cut through the noise to reach entire buyer groups, driving engagement and impact…” Source: RevenueBase Database · checked Sep 16, 2026
13	Moengage	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	501-1,000	908 contacts →
	Indirect evidence “MoEngage is an agentic customer engagement platform for the customer-obsessed marketers and product owners.” Source: RevenueBase Database · checked Sep 16, 2026
14	WEBFX	Strong evidence	Harrisburg, PA, United StatesHQ checked Sep 16, 2026	501-1,000	866 contacts →
	Strong evidence “We're here to be your digital marketing growth partner in the AI era.” Source: RevenueBase Database · checked Sep 16, 2026
15	Activecampaign	Strong evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	1,001-5,000	863 contacts →
	Strong evidence “ActiveCampaign is the AI-first autonomous marketing platform built to transform how marketers, agencies, and entrepreneurs work.” Source: RevenueBase Database · checked Sep 16, 2026
16	Demandbase	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	501-1,000	861 contacts →
	Partial evidence “Demandbase is the only pipeline AI platform that empowers GTM teams to automate growth at scale.” Source: RevenueBase Database · checked Sep 16, 2026
17	Marigold	Partial evidence	Nashville, TN, United StatesHQ checked Sep 16, 2026	201-500	820 contacts →
	Partial evidence “Marigold is a global marketing technology company focused on delivering relationship marketing solutions for growing organizations.” Source: RevenueBase Database · checked Sep 16, 2026
18	Iterable	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	501-1,000	771 contacts →
	Partial evidence “Iterable is the AI customer engagement platform built for enterprise scale, loved by teams, and trusted by global brands like Priceline, Fabletics, Blockchain, and Box.” Source: RevenueBase Database · checked Sep 16, 2026
19	Khoros	Indirect evidence	Austin, TX, United StatesHQ checked Sep 16, 2026	501-1,000	763 contacts →
	Indirect evidence “Khoros' award-winning enterprise software makes it easier for complex brands to engage with customers at scale across digital, social, and brand-owned channels.” Source: RevenueBase Database · checked Sep 16, 2026
20	Applovin	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 16, 2026	201-500	733 contacts →
	Indirect evidence “AppLovin helps businesses of any size reach over a billion people who play mobile games every day.” Source: RevenueBase Database · checked Sep 16, 2026
21	simpli.fi	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 16, 2026	501-1,000	680 contacts →
	Indirect evidence “Simpli.fi is a real-world media platform that connects digital intent with physical movement, helping brands reach audiences in the right place, at the right moment, to drive…” Source: RevenueBase Database · checked Sep 16, 2026
22	Movable INK	Partial evidence	New York, NY, United StatesHQ checked Sep 16, 2026	501-1,000	672 contacts →
	Partial evidence “Movable Ink helps marketers create more relevant customer experiences across email, mobile, and web through data activation, AI-powered decisioning, and personalization at scale.” Source: RevenueBase Database · checked Sep 16, 2026
23	On24	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	501-1,000	622 contacts →
	Partial evidence “ON24, a Cvent company, is on a mission to help businesses bring their go-to-market strategy into the AI era and drive cost-effective revenue growth.” Source: RevenueBase Database · checked Sep 16, 2026
24	Wildnet Technologies	Strong evidence	New York, NY, United StatesHQ checked Sep 16, 2026	201-500	590 contacts →
	Strong evidence “Wildnet Technologies - Best Digital Marketing Agency \| White Label Services for Growing Agencies \| Results-Driven AI SEO Services We don't just run campaigns-we build growth…” Source: RevenueBase Database · checked Sep 16, 2026
25	Optimove	Partial evidence	New York, NY, United StatesHQ checked Sep 16, 2026	501-1,000	588 contacts →
	Partial 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 16, 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: AI 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 AI marketing automation companies.
Partial evidence: Its own public description names part of AI 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 AI 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 2,825 AI marketing automation companies based in the United States

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

As of Sep 16, 2026

41.6%Verified-email coverage

25.3Average contacts per company

1-10Median size (employees)

6.4%Largest-city concentration · New York

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

1,776

11-50

780

51-200

178

201-500

501-1,000

1,001-5,000

5,001-10,000

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 2,825 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 AI 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 “AI 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 AI 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 AI 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, 29,811 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 16, 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.

AI marketing automation companies by metro

AI marketing automation companies in New York182
AI marketing automation companies in San Francisco160
AI marketing automation companies in Los Angeles70
AI marketing automation companies in Austin67
AI marketing automation companies in Miami67
AI marketing automation companies in Chicago50
AI marketing automation companies in Atlanta49
AI marketing automation companies in Houston44
AI marketing automation companies in Las Vegas44
AI marketing automation companies in Sheridan44
AI marketing automation companies in Dallas42
AI marketing automation companies in Boston35
AI marketing automation companies in Denver35
AI marketing automation companies in Orlando34
AI marketing automation companies in San Diego34
AI marketing automation companies in Seattle31
AI marketing automation companies in Tampa26

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 AI 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 AI marketing automation companies are there based in the United States?

RevenueBase identified 2,825 AI 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?

Hubspot, headquartered in Cambridge, tops this list with the largest team on record.

Which city has the most AI marketing automation companies?

New York leads with 182 headquartered companies, followed by San Francisco (160) and Los Angeles (70).

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 29,811 verified decision-maker contacts tracked across these 2,825 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 16, 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.