Company lists · Data refreshed September 2026

Top 24 Customer engagement platform companies based in Boston, United States

Name: Customer engagement platform 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 10, 2026 41 companies tracked

RevenueBase identified 41 customer engagement platform companies headquartered in Boston, United States as of September 2026 and tracks 5,352 professional contacts across them, including 2,602 with verified work emails and 1,918 with mobile numbers. New York is the largest hub.

This list covers customer engagement platform 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 10, 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 10, 2026 86% judged on-target in blind review

41Companies

5,352Contacts tracked

2,602Verified emails

1,918Mobile numbers

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

The 24 largest customer engagement platform companies based in Boston, United States

Ranked by team size

Top 24 of 41 customer engagement platform companies based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 10, 2026. RevenueBase Smart Search rates how each company's information relates to customer engagement platform 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 10, 2026	1,001-5,000	2,789 contacts →
	Indirect evidence “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Source: RevenueBase Database · checked Sep 10, 2026
2	Demandscience	Partial evidence	Boston, United StatesHQ checked Sep 10, 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 10, 2026
3	Validity INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	201-500	345 contacts →
	Partial evidence “Validity created the AI platform behind the world's most successful email programs.” Source: RevenueBase Database · checked Sep 10, 2026
4	Drift, A Salesloft Company	Partial evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	501-1,000	163 contacts →
	Partial evidence “Drift®, the buyer experience and Conversational AI company, inspires businesses to create more engaging customer experiences, one conversation at a time.” Source: RevenueBase Database · checked Sep 10, 2026
5	Blueconic	Partial evidence	Boston, MA, United StatesHQ checked Sep 10, 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 10, 2026
6	NIFT	Strong evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	51-200	114 contacts →
	Strong evidence “Nift helps platforms and brands turn moments of appreciation into powerful customer experiences and measurable business results.” Source: RevenueBase Database · checked Sep 10, 2026
7	Appcues	Partial evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	51-200	75 contacts →
	Partial evidence “Appcues helps customer-centric teams turn user behavior into activation, retention, and expansion without engineering bottlenecks.” Source: RevenueBase Database · checked Sep 10, 2026
8	Digital Onboarding, INC	Strong evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	51-200	72 contacts →
	Strong 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 10, 2026
9	Onramp	Strong evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	11-50	52 contacts →
	Strong evidence “Founded in 2020, OnRamp is the intelligent, AI-enabled customer onboarding and engagement platform that helps companies accelerate adoption, strengthen customer relationships, and…” Source: RevenueBase Database · checked Sep 10, 2026
10	Revotas	Strong evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	11-50	51 contacts →
	Strong 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 10, 2026
11	Sessionm	Strong evidence	Boston, MA, United StatesHQ checked Sep 10, 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 10, 2026
12	Perch Insights	Partial evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	11-50	45 contacts →
	Partial evidence “Customer Experience (CX) leaders are constantly in reactive mode, but Perch empowers them with data-driven insights to work proactively, leading to progressively better business…” Source: RevenueBase Database · checked Sep 10, 2026
13	Incentivio	Strong evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	51-200	43 contacts →
	Strong evidence “Incentivio delivers a comprehensive digital guest engagement platform to transform how restaurants attract, retain, and delight customers.” Source: RevenueBase Database · checked Sep 10, 2026
14	Customersai	Partial evidence	Boston, MA, United StatesHQ checked Sep 10, 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 10, 2026
15	Awarex	Strong evidence	Boston, MA, United StatesHQ checked Sep 10, 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 10, 2026
16	eligen.io	Indirect evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	11-50	22 contacts →
	Indirect evidence “Eligen automates prescreen marketing efforts with hyper-personalized offers and post-campaign analytics that show exactly where to find lift in your next campaign.” Source: RevenueBase Database · checked Sep 10, 2026
17	Customer Portfolios	Partial evidence	Boston, MA, United StatesHQ checked Sep 10, 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 10, 2026
18	Cohora	Strong evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	11-50	9 contacts →
	Strong evidence “Cohora is a customer engagement and analytics platform for ecommerce retention.” Source: RevenueBase Database · checked Sep 10, 2026
19	Pointillist	Strong evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	51-200	8 contacts →
	Strong evidence “Genesys’s award-winning Pointillist Customer Journey Management Platform enables organizations to deliver frictionless, connected and personalized experiences.” Source: RevenueBase Database · checked Sep 10, 2026
20	Cartconvert	Partial evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	1-10	6 contacts →
	Partial evidence “CartConvert is a pioneering checkout recovery platform that specializes in personalized, human-powered SMS and live chat solutions for e-commerce brands.” Source: RevenueBase Database · checked Sep 10, 2026
21	Connect NOW INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	11-50	5 contacts →
	Indirect evidence “In our fast-paced, on-demand world, consumers expect fast solutions in their moment of need.” Source: RevenueBase Database · checked Sep 10, 2026
22	Successeve	Strong evidence	Boston, United StatesHQ checked Sep 10, 2026	11-50	2 contacts →
	Strong evidence “Successeve is a Customer Intelligence Platform.” Source: RevenueBase Database · checked Sep 10, 2026
23	Promark AI	Indirect evidence	Boston, United StatesHQ checked Sep 10, 2026	1-10	1 contacts →
	Indirect 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 10, 2026
24	L2l Creative Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 10, 2026	1-10	1 contacts →
	Indirect 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 10, 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 platform 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 customer engagement platform companies.
Partial evidence: Its own public description names part of customer engagement platform companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer engagement platform 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 24 of 41 customer engagement platform companies based in Boston, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,602 reachable decision-makers.

Free signup · no credit card

View the full list →

Customer engagement platform companies based in Boston, United States at a glance

As of Sep 10, 2026

48.6%Verified-email coverage

35.8%Mobile-number coverage

130.5Average contacts per company

11-50Median size (employees)

382.9%Largest-city concentration · New York

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

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

Email last verified

Median 12.0d

2,4040–30

18031–60

061–90

090–180

18180+

Company record updated

Median 51.0d

00–30

3,18731–60

1,53461–90

37690–180

255180+

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 platform 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 “customer engagement platform 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 customer engagement platform 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 customer engagement platform 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, 2,602 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 10, 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 platform companies by metro in the United States

Customer engagement platform companies in New York157
Customer engagement platform companies in San Francisco98
Customer engagement platform companies in Boston42
Customer engagement platform companies in Miami41
Customer engagement platform companies in Austin40
Customer engagement platform companies in Los Angeles39
Customer engagement platform companies in Atlanta39

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 platform 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 customer engagement platform companies are there based in Boston, United States?

RevenueBase identified 41 customer engagement platform 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 customer engagement platform companies?

New York leads with 157 headquartered companies, followed by San Francisco (98) and Boston (42).

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 2,602 verified decision-maker contacts tracked across these 41 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 10, 2026.

Ready to reach these companies? Verified emails and direct dials for all 41 customer engagement platform companies based in Boston, United States. Start with a free account, no credit card.

Download this list →

Related lists

Customer engagement platform companies 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.