Company lists · Data refreshed September 2026

Top 25 Customer engagement agencies based in Boston, United States

Name: Customer engagement agencies based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 96 companies tracked

RevenueBase identified 96 customer engagement agencies headquartered in Boston, United States as of September 2026 and tracks 10,042 professional contacts across them, including 4,177 with verified work emails. New York is the largest hub.

This list covers customer engagement 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 19, 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 19, 2026 86% judged on-target in blind review

96Companies

10,042Contacts tracked

4,177Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest customer engagement agencies based in Boston, United States

Ranked by team size

Top 25 of 96 customer engagement agencies based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to customer engagement 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	Klaviyo	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,789 contacts →
	Indirect evidence “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Source: RevenueBase Database · checked Sep 19, 2026
2	Digitas North America	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 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 19, 2026
3	Jack Morton Worldwide	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	501-1,000	1,127 contacts →
	Indirect evidence “We’re a global agency focused on building experience brands.” Source: RevenueBase Database · checked Sep 19, 2026
4	Demandscience	Partial evidence	Boston, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,087 contacts →
	Partial 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 19, 2026
5	AMP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	501-1,000	450 contacts →
	Indirect evidence “Today’s best brands don’t just generate attention-they earn it, and they know how to convert it.” Source: RevenueBase Database · checked Sep 19, 2026
6	Blueconic	Partial evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	201-500	161 contacts →
	Partial evidence “BlueConic is the leading Customer Growth Engine, helping brands unlock the full value of their customer data.” Source: RevenueBase Database · checked Sep 19, 2026
7	Connelly Partners	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	142 contacts →
	Indirect evidence “We’re Connelly Partners, an independent, full-service marketing agency spanning hubs in Boston, Dublin and Vancouver.” Source: RevenueBase Database · checked Sep 19, 2026
8	Allen & Gerritsen	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	132 contacts →
	Indirect evidence “A&G (Allen & Gerritsen) exists to help brands Be Unignorable.” Source: RevenueBase Database · checked Sep 19, 2026
9	Wasserman Next GEN	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	129 contacts →
	Indirect evidence “Wasserman Next Gen connects brands with the Next Generation of consumers.” Source: RevenueBase Database · checked Sep 19, 2026
10	Digital Onboarding, INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	72 contacts →
	Partial evidence “Digital Onboarding is an award-winning engagement platform helping banks and credit unions activate, engage, and grow lasting relationships.” Source: RevenueBase Database · checked Sep 19, 2026
11	451 Agency	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	72 contacts →
	Indirect evidence “451 Agency is an award-winning, fully integrated marketing, advertising, and communications agency that specializes in creative design, advertising, public relations, digital…” Source: RevenueBase Database · checked Sep 19, 2026
12	Overdrive	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	68 contacts →
	Indirect evidence “Overdrive is a full-service digital agency built for brands that need more than vendor support-they need strategic firepower and operational efficiency.” Source: RevenueBase Database · checked Sep 19, 2026
13	Brodeur Partners	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	55 contacts →
	Indirect evidence “If we have to accept a conventional label, then Brodeur Partners is a communications agency.” Source: RevenueBase Database · checked Sep 19, 2026
14	Revotas	Partial evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	51 contacts →
	Partial 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 19, 2026
15	Sessionm	Strong evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	201-500	48 contacts →
	Strong evidence “SessionM is a customer engagement and loyalty platform empowering the world’s most innovative brands to forge stronger and more profitable customer relationships.” Source: RevenueBase Database · checked Sep 19, 2026
16	EMI Strategic Marketing	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence “EMI is driven by results and focused on helping clients master change, grow profitable relationships and move forward faster.” Source: RevenueBase Database · checked Sep 19, 2026
17	Customersai	Partial evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	40 contacts →
	Partial 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 19, 2026
18	Breaktime Media	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “Breaktime Media focuses on helping shoppers decide what to buy and where to buy it.” Source: RevenueBase Database · checked Sep 19, 2026
19	Awarex	Strong evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	27 contacts →
	Strong 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 19, 2026
20	Full Contact Advertising	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “We are here to do one thing at Full Contact: MAKE IMPACT.” Source: RevenueBase Database · checked Sep 19, 2026
21	Getfused	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Getfused is a full-service creative marketing agency providing services across digital marketing, user-centered design, and development to our wide variety of clients.” Source: RevenueBase Database · checked Sep 19, 2026
22	Beacon Brand Solutions	Partial evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “Beacon Brand Solutions specializes in creative consumer engagement & activation.” Source: RevenueBase Database · checked Sep 19, 2026
23	Hunt & Gather	Partial evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Hunt & Gather is a full-service interactive agency that creates strategic, creative, and effective communications that evoke authentic engagements between your brand and its…” Source: RevenueBase Database · checked Sep 19, 2026
24	REALM	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “We are a global B2B agency that delivers strongly integrated media campaigns that solve real business challenges.” Source: RevenueBase Database · checked Sep 19, 2026
25	Customer Portfolios	Partial evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	14 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 19, 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: customer engagement 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 customer engagement agencies.
Partial evidence: Its own public description names part of customer engagement agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer engagement 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 96 customer engagement 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 4,177 reachable decision-makers.

Free signup · no credit card

View the full list →

Customer engagement agencies based in Boston, United States at a glance

As of Sep 19, 2026

41.6%Verified-email coverage

104.6Average contacts per company

11-50Median size (employees)

640.6%Largest-city concentration · New York

Sep 19, 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 96 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 customer engagement 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 “customer engagement 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 customer engagement 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 customer engagement 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, 4,177 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 19, 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.

Customer engagement 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 customer engagement 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 customer engagement agencies are there based in Boston, United States?

RevenueBase identified 96 customer engagement 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 customer engagement agencies?

New York leads with 615 headquartered companies, followed by Los Angeles (346) and Miami (197).

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 4,177 verified decision-maker contacts tracked across these 96 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 96 customer engagement agencies based in Boston, United States. Start with a free account, no credit card.

Download this list →

Related lists

Customer engagement agencies by geography

Browse the directory

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.