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Company lists · Data refreshed September 2026

Top 25 Marketing automation agencies based in Boston, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 60 companies tracked

RevenueBase identified 60 marketing automation agencies headquartered in Boston, United States as of September 2026 and tracks 4,807 professional contacts across them, including 2,402 with verified work emails. New York is the largest hub.

This list covers marketing automation agencies 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 17, 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 17, 2026 86% judged on-target in blind review
60Companies
4,807Contacts tracked
2,402Verified emails
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The 25 largest marketing automation agencies based in Boston, United States

Ranked by team size
Top 25 of 60 marketing automation agencies based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marketing automation 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1
Klaviyo
Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 20261,001-5,0002,789 contacts →

Indirect evidence

“Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.”

Source: RevenueBase Database · checked Sep 17, 2026
2
Demandscience
Indirect evidenceBoston, United StatesHQ checked Sep 17, 20261,001-5,0001,087 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 17, 2026
3
Validity INC
Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 2026201-500345 contacts →

Indirect evidence

“Validity created the AI platform behind the world's most successful email programs.”

Source: RevenueBase Database · checked Sep 17, 2026
4
Rapiddev
Indirect evidenceBoston, United StatesHQ checked Sep 17, 202651-200124 contacts →

Indirect evidence

“We help companies turn AI strategy into measurable business outcomes.”

Source: RevenueBase Database · checked Sep 17, 2026
5
Tier 11
Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 202651-20052 contacts →

Indirect evidence

“On average, we have found that 76% of digital advertising budgets are wasted.”

Source: RevenueBase Database · checked Sep 17, 2026
6
Revotas
Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 202611-5051 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 17, 2026
7
Nowspeed Marketing
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 202611-5032 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 17, 2026
8
Dataxu
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 20261,001-5,00023 contacts →

Partial evidence

“In 2009, dataxu® was founded on the premise that data science could help make marketing better.”

Source: RevenueBase Database · checked Sep 17, 2026
9
Convertiv
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 202611-5019 contacts →

Partial evidence

“Convertiv is the marketing agency that delivers for businesses that demand high performance, efficiency and digital (design) excellence.”

Source: RevenueBase Database · checked Sep 17, 2026
10
Customer Portfolios
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 202611-5014 contacts →

Partial 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 17, 2026
11
Whatarmy
Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-1011 contacts →

Indirect evidence

“Unleash your brand's potential!”

Source: RevenueBase Database · checked Sep 17, 2026
12
Ideometry
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-1010 contacts →

Partial evidence

“Connect with Ideometry, a Boston-based agency that jump-starts your marketing, extends your brand, and builds full-scale campaign strategies that create engagement, generate…”

Source: RevenueBase Database · checked Sep 17, 2026
13
Faster
Indirect evidenceBoston, United StatesHQ checked Sep 17, 202611-509 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 17, 2026
14
Demandbright
Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-107 contacts →

Indirect evidence

“DEMANDBRIGHT is a modern growth accelerator for marketers.”

Source: RevenueBase Database · checked Sep 17, 2026
15
Charisma 18 SEO Digital Marketing Agency
Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-105 contacts →

Indirect evidence

“At Charisma 18, we empower wellness and service professionals-like mental health clinics, physical therapists, and consultants-to thrive online.”

Source: RevenueBase Database · checked Sep 17, 2026
16
Loop7 Media
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-105 contacts →

Partial evidence

“Loop7 Media has a simple vision: to provide 1st class digital marketing services.”

Source: RevenueBase Database · checked Sep 17, 2026
17
Darby Digital
Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-102 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 17, 2026
18
WOW Connections, LLC
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 202611-502 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 17, 2026
19
Growcomma Marketing
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-102 contacts →

Partial evidence

“Growcomma Marketing specializes in helping businesses succeed in the digital landscape.”

Source: RevenueBase Database · checked Sep 17, 2026
20
Celerity Is, INC
Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 202651-2001 contacts →

Indirect evidence

“Driven by data.”

Source: RevenueBase Database · checked Sep 17, 2026
21
Promark AI
Strong evidenceBoston, United StatesHQ checked Sep 17, 20261-101 contacts →

Strong evidence

“ProMark AI is a cutting-edge software company focused on using artificial intelligence (beta) and automation (live) to help businesses optimize their marketing and sales…”

Source: RevenueBase Database · checked Sep 17, 2026
22
L2l Creative Group
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-101 contacts →

Partial evidence

“L2L Creative Group (formerly Leave it to Lindsay) is a Boston-based social media agency offering social media strategy, email marketing, and Constant Contact services businesses.”

Source: RevenueBase Database · checked Sep 17, 2026
23
Flux Flow
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-101 contacts →

Partial evidence

“Your Formula For Scalable Growth We're an agile growth marketing agency that designs strategies to accelerate customer acquisition, increase conversion rates and improve customer…”

Source: RevenueBase Database · checked Sep 17, 2026
24
Echosurge Marketing
Partial evidenceBoston, United StatesHQ checked Sep 17, 20261-101 contacts →

Partial evidence

“Echosurge is a digital marketing company that specializes in web design, email marketing, social media marketing and content generation.”

Source: RevenueBase Database · checked Sep 17, 2026
25
Growth Science Agency
Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 20261-101 contacts →

Partial evidence

“The Growth Science Agency is a collective of growth-minded marketers using automation to consistently deliver high value B2B leads to our clients.”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 60 marketing automation agencies based in Boston, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,402 reachable decision-makers.

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Marketing automation agencies based in Boston, United States at a glance

As of Sep 17, 2026
50.0%Verified-email coverage
80.1Average contacts per company
1-10Median size (employees)
516.7%Largest-city concentration · New York
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
36
11-50
14
51-200
5
201-500
1
1,001-5,000
4

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 60 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 automation 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 Boston, United States whose own description of what they do matches “marketing automation 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 marketing automation 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 marketing automation agencies, 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, 2,402 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 17, 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 automation agencies 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 automation 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 marketing automation agencies are there based in Boston, United States?

RevenueBase identified 60 marketing automation agencies 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 automation agencies?

New York leads with 310 headquartered companies, followed by Los Angeles (173) and Miami (164).

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 2,402 verified decision-maker contacts tracked across these 60 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 17, 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.

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