Company lists · Data refreshed September 2026

Top 25 Martech integration agencies based in the United States

Name: Martech integration agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 5,559 companies tracked

RevenueBase identified 5,559 martech integration agencies headquartered in the United States as of September 2026 and tracks 102,176 professional contacts across them, including 34,506 with verified work emails and 31,882 with mobile numbers. New York is the largest hub.

This list covers martech integration agencies 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 14, 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 14, 2026 86% judged on-target in blind review

5,559Companies

102,176Contacts tracked

34,506Verified emails

31,882Mobile numbers

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The 25 largest martech integration agencies based in the United States

Ranked by team size

Top 25 of 5,559 martech integration agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to martech integration agencies: 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	VML	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	10001+	15,338 contacts →
	Indirect evidence “VML is a global powerhouse born from the unification of Wunderman Thompson and VMLY & R, two of the world's most powerful and accomplished creative agencies with complementary…” Source: RevenueBase Database · checked Sep 14, 2026
2	HIBU	Indirect evidence	Cedar Rapids, IA, United StatesHQ checked Sep 14, 2026	1,001-5,000	4,426 contacts →
	Indirect evidence “Hibu is a leading provider of technology-driven, integrated digital marketing solutions for America’s local businesses, trusted by tens of thousands of local business owners.” Source: RevenueBase Database · checked Sep 14, 2026
3	Digitas North America	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,654 contacts →
	Indirect evidence “Digitas is the Networked Experience Agency, built on the vision that we create magnetic experiences that earn the right for brands to exist in human networks.” Source: RevenueBase Database · checked Sep 14, 2026
4	Zeta Global	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,595 contacts →
	Indirect evidence “At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.” Source: RevenueBase Database · checked Sep 14, 2026
5	Credera	Indirect evidence	Addison, TX, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,842 contacts →
	Indirect evidence “Credera empowers the world’s leading brands to navigate the complexities of data, technology, and marketing.” Source: RevenueBase Database · checked Sep 14, 2026
6	Razorfish	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,763 contacts →
	Indirect evidence “Hi there!” Source: RevenueBase Database · checked Sep 14, 2026
7	Grazitti Interactive	Indirect evidence	Mountain View, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,506 contacts →
	Indirect evidence “Grazitti Interactive is a digital innovation leader with offices in India, USA, Australia, and Singapore.” Source: RevenueBase Database · checked Sep 14, 2026
8	Intuit Mailchimp	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,483 contacts →
	Indirect evidence “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Source: RevenueBase Database · checked Sep 14, 2026
9	Centro	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	501-1,000	1,178 contacts →
	Indirect evidence “Basis Technologies is a global provider of workflow automation, intelligence and programmatic trading software for the marketing enterprise.” Source: RevenueBase Database · checked Sep 14, 2026
10	BORN	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,029 contacts →
	Indirect evidence “Connecting creative, content, and commerce, BORN is an award-winning, global agency that helps brands with digital transformation.” Source: RevenueBase Database · checked Sep 14, 2026
11	Astound Digital	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	1,001-5,000	936 contacts →
	Indirect evidence “At Astound Digital, we help brands build smarter, connected digital experiences.” Source: RevenueBase Database · checked Sep 14, 2026
12	WEBFX	Indirect evidence	Harrisburg, PA, United StatesHQ checked Sep 14, 2026	501-1,000	866 contacts →
	Indirect evidence “We're here to be your digital marketing growth partner in the AI era.” Source: RevenueBase Database · checked Sep 14, 2026
13	NP Digital	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	866 contacts →
	Indirect evidence “Neil Patel has been recognized by the Wall Street Journal, Forbes, and the United Nations, to name a few, as one of the most influential and successful marketers and entrepreneurs…” Source: RevenueBase Database · checked Sep 14, 2026
14	Activecampaign	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	1,001-5,000	863 contacts →
	Indirect evidence “ActiveCampaign is the AI-first autonomous marketing platform built to transform how marketers, agencies, and entrepreneurs work.” Source: RevenueBase Database · checked Sep 14, 2026
15	simpli.fi	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 14, 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 14, 2026
16	Movable INK	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	672 contacts →
	Indirect 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 14, 2026
17	Vertis Communications	Indirect evidence	Sussex, WI, United StatesHQ checked Sep 14, 2026	10001+	605 contacts →
	Indirect evidence “Vertis Communications was acquired by Quad/Graphics in January 2013.” Source: RevenueBase Database · checked Sep 14, 2026
18	Optimove	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	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 14, 2026
19	Iquanti	Indirect evidence	Jersey City, NJ, United StatesHQ checked Sep 14, 2026	501-1,000	538 contacts →
	Indirect evidence “iQuanti was founded to deliver on the promise of high-performance digital marketing, combining deep analytics, proprietary technology, and a results-driven approach.” Source: RevenueBase Database · checked Sep 14, 2026
20	Tombras	Indirect evidence	Knoxville, TN, United StatesHQ checked Sep 14, 2026	201-500	496 contacts →
	Indirect evidence “Tombras is a 450+ person, full-service agency with a digital mindset.” Source: RevenueBase Database · checked Sep 14, 2026
21	Mavlers	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 14, 2026	501-1,000	488 contacts →
	Indirect evidence “At Mavlers, we’re more than just a digital marketing and technology partner-we’re your behind-the-scenes powerhouse.” Source: RevenueBase Database · checked Sep 14, 2026
22	YES Marketing	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 14, 2026	201-500	483 contacts →
	Indirect evidence “Yes Marketing focuses on enabling marketers to engage, acquire and retain consumers along each stage of the consumer journey with a brand – from awareness through consideration…” Source: RevenueBase Database · checked Sep 14, 2026
23	The Power Agency	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 14, 2026	51-200	420 contacts →
	Indirect evidence “We are proud to announce that PowerScoppechio is now operating as TogetherWith.” Source: RevenueBase Database · checked Sep 14, 2026
24	E2m	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 14, 2026	201-500	413 contacts →
	Indirect evidence “For more than 13 years, E2M Solutions has helped digital agencies scale delivery without adding headcount, sacrificing quality, or losing control of the client experience.” Source: RevenueBase Database · checked Sep 14, 2026
25	Icrossing	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	406 contacts →
	Indirect evidence “iCrossing is a Hearst-owned digital marketing agency and marketing technology consultancy that helps brands win demand, convert demand, and scale performance in an AI-driven world.” Source: RevenueBase Database · checked Sep 14, 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: martech integration agencies. 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 martech integration agencies.
Partial evidence: Its own public description names part of martech integration agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name martech integration agencies. 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 5,559 martech integration agencies based in the United States

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Martech integration agencies based in the United States at a glance

As of Sep 14, 2026

33.8%Verified-email coverage

31.2%Mobile-number coverage

18.4Average contacts per company

1-10Median size (employees)

5.1%Largest-city concentration · New York

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

3,459

11-50

1,625

51-200

333

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 17.0d

26,6730–30

7,29831–60

12361–90

5290–180

360180+

Company record updated

Median 71.0d

00–30

45,42531–60

41,20161–90

10,59890–180

4,952180+

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 martech integration agencies, 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 “martech integration agencies”. 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 martech integration agencies), 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 martech integration agencies, 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, 34,506 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 14, 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.

Martech integration agencies 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 martech integration agencies, 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 martech integration agencies are there based in the United States?

RevenueBase identified 5,559 martech integration agencies 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?

VML, headquartered in New York, tops this list with the largest team on record.

Which city has the most martech integration agencies?

New York leads with 284 headquartered companies, followed by Los Angeles (160) and Chicago (130).

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 34,506 verified decision-maker contacts tracked across these 5,559 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 14, 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.