Company lists · Data refreshed September 2026

Top 25 Marketing automation firms based in the United States

Name: Marketing automation firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 4,282 companies tracked

RevenueBase identified 4,282 company matches for marketing automation firms associated with the United States as of September 2026 and tracks 68,608 professional contacts across them, including 24,689 with verified work emails. New York is the largest hub.

This list covers company matches for marketing automation firms 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 September 21, 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 Sep 21, 2026 How this list was built

4,282Companies

68,608Contacts tracked

24,689Verified emails

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The 25 largest marketing automation firms based in the United States

Ranked by team size

Top 25 of 4,282 company matches for marketing automation firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Hubspot	Exact match	Cambridge, MA, United StatesHQ recorded Sep 21, 2026	5,001-10,000	11,077 contacts →
	Exact match “HubSpot is a leading agentic customer platform that provides software and support to help businesses grow better.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Klaviyo	Exact match	Boston, MA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,789 contacts →
	Exact match “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Zeta Global	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,595 contacts →
	Exact match “At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Localiq	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,534 contacts →
	Exact match “Grow your business with digital marketing powered by AI and local expertise.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Intuit Mailchimp	Exact match	Atlanta, GA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,483 contacts →
	Exact match “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Centro	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	501-1,000	1,178 contacts →
	Exact match “Basis Technologies is a global provider of workflow automation, intelligence and programmatic trading software for the marketing enterprise.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Demandscience	Exact match	Boston, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,087 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Activecampaign	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	863 contacts →
	Exact match “ActiveCampaign is the AI-first autonomous marketing platform built to transform how marketers, agencies, and entrepreneurs work.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Marigold	Exact match	Nashville, TN, United StatesHQ recorded Sep 21, 2026	201-500	820 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 · Sep 21, 2026 · View company records in RevenueBase
10	Manlitics B2B Ites	Exact match	New York, United StatesHQ recorded Sep 21, 2026	501-1,000	750 contacts →
	Exact match “In an ERA of new and emerging digital mediums, we align our core expertise of today’s ever-changing technology with a clear understanding of traditional marketing methods without…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	simpli.fi	Exact match	Fort Worth, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	680 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Movable INK	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	672 contacts →
	Exact match “Movable Ink helps marketers create more relevant customer experiences across email, mobile, and web through data activation, AI-powered decisioning, and personalization at scale.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Optimove	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	588 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Adobe Marketo	Exact match	San Jose, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	572 contacts →
	Exact match “Adobe Marketo Engage offers the leading Engagement Platform that empowers marketers to build brand value, grow revenue, and prove impact.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Marketone International	Exact match	Waltham, MA, United StatesHQ recorded Sep 21, 2026	201-500	431 contacts →
	Exact match “MarketOne is a global demand generation agency.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	HCL Unica	Exact match	Sunnyvale, CA, United StatesHQ recorded Sep 21, 2026	10001+	381 contacts →
	Exact match “Collaborate, innovate and drive the business forward with HCLSoftware's Digital Transformation marketing software solution.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	GSM	Exact match	Atlanta, GA, United StatesHQ recorded Sep 21, 2026	51-200	361 contacts →
	Exact match “GSM is a full service Fixed-Ops marketing company specializing in the automotive industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Hightouch	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	201-500	358 contacts →
	Exact match “Hightouch is an Agentic Marketing Platform powered by the industry-leading Composable CDP.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Validity INC	Exact match	Boston, MA, United StatesHQ recorded Sep 21, 2026	201-500	345 contacts →
	Exact match “Validity created the AI platform behind the world's most successful email programs.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Soci, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	501-1,000	338 contacts →
	Exact match “SOCi is the leading CoMarketing Cloud for multi-location enterprises.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Callrail	Exact match	Atlanta, GA, United StatesHQ recorded Sep 21, 2026	201-500	332 contacts →
	Exact match “CallRail is the lead engagement platform that makes it easy for businesses to attract more leads, convert more customers, and optimize their marketing.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Nextroll	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	201-500	320 contacts →
	Exact match “NextRoll is a leading marketing technology company that empowers businesses to drive sustainable growth while building trusted connections with their audiences.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	C-4 Analytics	Exact match	Wakefield, MA, United StatesHQ recorded Sep 21, 2026	201-500	318 contacts →
	Exact match “C-4 Analytics is a cutting-edge automotive digital marketing solution dedicated to helping dealerships thrive in a digital-first world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	marketing.com	Exact match	Eureka, MO, United StatesHQ recorded Sep 21, 2026	1,001-5,000	309 contacts →
	Exact match “From click to print and everything in between, we’re not changing marketing, just how it’s done.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Claritas	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 21, 2026	201-500	299 contacts →
	Exact match “Claritas: Empowering Data-Driven Marketing With nearly 50 years of understanding the American consumer, Claritas offers a comprehensive marketing optimization platform.” Recorded in the RevenueBase company graph · Sep 21, 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 “marketing automation firms”. 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 4,282 marketing automation firms based in the United States

See the full list, filter by size, metro and specialty, and access 24,689 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Marketing automation firms based in the United States at a glance

As of Sep 21, 2026

36.0%Verified-email coverage

16.0Average contacts per company

1-10Median size (employees)

5.0%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

2,855

11-50

1,067

51-200

251

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 4,282 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 “marketing automation firms” 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 24,689 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 September 21, 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.

Marketing automation firms 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 “marketing automation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 4,282 company matches for marketing automation firms associated with the United States as of September 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?

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

Which city has the most marketing automation firms?

New York leads with 215 company records, followed by San Francisco (124) and Miami (117).

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 24,689 professional contacts with verified work emails tracked across these 4,282 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 September 21, 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.