Company lists · Data refreshed September 2026

Top 25 Marketing technology companies based in Boston, United States

Name: Marketing technology companies based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 76 companies tracked

RevenueBase identified 76 marketing technology companies headquartered in Boston, United States as of September 2026 and tracks 5,110 professional contacts across them, including 2,522 with verified work emails. New York is the largest hub.

This list covers marketing technology companies headquartered in Boston, 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 20, 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 20, 2026 86% judged on-target in blind review

76Companies

5,110Contacts tracked

2,522Verified emails

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The 25 largest marketing technology companies based in Boston, United States

Ranked by team size

Top 25 of 76 marketing technology companies based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to marketing technology 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	Klaviyo	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,789 contacts →
	Indirect evidence “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Source: RevenueBase Database · checked Sep 20, 2026
2	Demandscience	Indirect evidence	Boston, United StatesHQ checked Sep 20, 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 20, 2026
3	Validity INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	345 contacts →
	Indirect evidence “Validity created the AI platform behind the world's most successful email programs.” Source: RevenueBase Database · checked Sep 20, 2026
4	829 Studios	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	261 contacts →
	Partial evidence “We are your partner in performance, delivering tech-enabled, full-service digital marketing solutions optimized to elevate your business.” Source: RevenueBase Database · checked Sep 20, 2026
5	Blueconic	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	161 contacts →
	Indirect evidence “BlueConic is the leading Customer Growth Engine, helping brands unlock the full value of their customer data.” Source: RevenueBase Database · checked Sep 20, 2026
6	CYBBA	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	51-200	63 contacts →
	Indirect evidence “Cybba helps brands turn advertising into measurable business outcomes.” Source: RevenueBase Database · checked Sep 20, 2026
7	Revotas	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	11-50	51 contacts →
	Indirect evidence “Revotas is an insights-led customer experience platform trusted by over global consumer brands such as Miele, Beşiktaş, Little Caesars, Toyota, Elite World Hotels and more.” Source: RevenueBase Database · checked Sep 20, 2026
8	Customersai	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	11-50	40 contacts →
	Indirect evidence “CustomersAI works with brands across the DTC ecosystem, and we’re proud official partners of Klaviyo, Shopify, Meta, and Google.” Source: RevenueBase Database · checked Sep 20, 2026
9	Nowspeed Marketing	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	11-50	32 contacts →
	Partial evidence “Nowspeed is an AI-enabled digital marketing agency that helps growth-focused organizations turn marketing spend into measurable pipeline.” Source: RevenueBase Database · checked Sep 20, 2026
10	Awarex	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “AwareX is the only digital customer engagement solution that enables businesses to build customer loyalty and maximize revenue opportunities - right out of the box.” Source: RevenueBase Database · checked Sep 20, 2026
11	Dataxu	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1,001-5,000	23 contacts →
	Partial evidence “In 2009, dataxu® was founded on the premise that data science could help make marketing better.” Source: RevenueBase Database · checked Sep 20, 2026
12	Cortex	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1-10	16 contacts →
	Partial evidence “Cortex is for leading marketers who want to create marketing that doesn’t feel like marketing.” Source: RevenueBase Database · checked Sep 20, 2026
13	Customer Portfolios	Strong evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	11-50	14 contacts →
	Strong evidence “Customer Portfolios is a marketing technology leader that empowers its global clients to maximize the value of each customer.” Source: RevenueBase Database · checked Sep 20, 2026
14	GOAL	Strong evidence	Boston, United StatesHQ checked Sep 20, 2026	11-50	10 contacts →
	Strong evidence “Goal is a comprehensive marketing technology platform that will help you attract, capture, and convert your own insurance leads into policies at a highly profitable ROI.” Source: RevenueBase Database · checked Sep 20, 2026
15	Realtop	Partial evidence	Boston, United StatesHQ checked Sep 20, 2026	1-10	9 contacts →
	Partial evidence “Helping businesses dominate their competition with data-driven digital marketing.” Source: RevenueBase Database · checked Sep 20, 2026
16	Cirrus Media	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1-10	9 contacts →
	Partial evidence “Cirrus Media is a search engine marketing firm that specializes in Search Engine Optimization and Paid Search.” Source: RevenueBase Database · checked Sep 20, 2026
17	Faster	Indirect evidence	Boston, United StatesHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence “Faster is a business workspace where people and AI use the same tools, permissions, customer context, and review flows to run websites, bookings, payments, follow-up, and growth…” Source: RevenueBase Database · checked Sep 20, 2026
18	Showroom Marketing	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “The ShowromMarketing.Com Method™ Helps Entities Of All Shapes, Sizes And Structures Blanket The 1st Page Of Google, Win More Inquiries And Sales On And Through The Internet…” Source: RevenueBase Database · checked Sep 20, 2026
19	Semrush Deutschland	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	501-1,000	7 contacts →
	Partial evidence “Tools für alles, was dein Marketer-Herz begehrt – SEO, Content-Marketing, Wettbewerbsforschung, PPC und Social-Media-Marketing.” Source: RevenueBase Database · checked Sep 20, 2026
20	Demandbright	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1-10	7 contacts →
	Indirect evidence “DEMANDBRIGHT is a modern growth accelerator for marketers.” Source: RevenueBase Database · checked Sep 20, 2026
21	Loop7 Media	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “Loop7 Media has a simple vision: to provide 1st class digital marketing services.” Source: RevenueBase Database · checked Sep 20, 2026
22	Darby Digital	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1-10	2 contacts →
	Indirect evidence “As a business leader with a vision for success, you recognize the importance of having a reliable partner who can navigate the complexities of the digital age, drive growth, and…” Source: RevenueBase Database · checked Sep 20, 2026
23	WOW Connections, LLC	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	11-50	2 contacts →
	Partial evidence “WOW CONNECTIONS, LLC is an agency with a distinctive style that provides growth through a highly strategic and customized marketing system to produce high-quality leads and…” Source: RevenueBase Database · checked Sep 20, 2026
24	Celerity Is, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	51-200	1 contacts →
	Indirect evidence “Driven by data.” Source: RevenueBase Database · checked Sep 20, 2026
25	Chiefmartec	Strong evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	1-10	1 contacts →
	Strong evidence “The leading newsletter/blog analyzing marketing technology, edited by Scott Brinker, dubbed the "godfather of martech" by Ad Age.” Source: RevenueBase Database · checked Sep 20, 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: marketing technology 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 marketing technology companies.
Partial evidence: Its own public description names part of marketing technology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marketing technology 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 76 marketing technology companies based in Boston, United States

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Marketing technology companies based in Boston, United States at a glance

As of Sep 20, 2026

49.4%Verified-email coverage

67.2Average contacts per company

1-10Median size (employees)

427.6%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 76 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 marketing technology 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 Boston, United States whose own description of what they do matches “marketing technology 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 marketing technology 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 marketing technology companies, and records with no verified work email. Companies headquartered outside Boston 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, 2,522 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 20, 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.

Marketing technology companies by metro in the United States

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 marketing technology 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 marketing technology companies are there based in Boston, United States?

RevenueBase identified 76 marketing technology companies headquartered in Boston, 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?

Klaviyo, headquartered in Boston, tops this list with the largest team on record.

Which city has the most marketing technology companies?

New York leads with 325 headquartered companies, followed by San Francisco (173) and Miami (131).

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 2,522 verified decision-maker contacts tracked across these 76 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 20, 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.