Company lists · Data refreshed November 2026

Top 14 Customer engagement platform developers based in Boston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 25 companies tracked

RevenueBase identified 25 company matches for customer engagement platform developers associated with Boston, United States as of November 2026 and tracks 3,493 professional contacts across them, including 1,956 with verified work emails. Across the United States, New York is the largest hub for this category (109 companies); Boston has 25.

This list covers company matches for customer engagement platform developers associated with Boston, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built

25Companies

3,493Contacts tracked

1,956Verified emails

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The 14 largest customer engagement platform developers based in Boston, United States

Ranked by team size

Top 14 of 25 company matches for customer engagement platform developers based in Boston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Klaviyo	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,980 contacts →
	Exact match “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Modo Labs	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	51-200	91 contacts →
	Exact match “Modo is the world’s leading platform provider of workplace and campus apps.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Appcues	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	51-200	74 contacts →
	Exact match “Appcues is a customer engagement platform that helps marketing and product teams turn the product customers already live in into the best place to reach, encourage, and engage…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Onramp	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	11-50	53 contacts →
	Exact match “Founded in 2020, OnRamp is the intelligent, AI-enabled customer onboarding and engagement platform that helps companies accelerate adoption, strengthen customer relationships, and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Levelup	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	201-500	47 contacts →
	Exact match “LevelUp is building next-generation mobile experiences for over 200 brands nationwide: empowering businesses to engage customers, grow sales and build a long-term scalable mobile…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Incentivio	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	51-200	41 contacts →
	Exact match “Incentivio delivers a comprehensive digital guest engagement platform to transform how restaurants attract, retain, and delight customers.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Sessionm	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	201-500	39 contacts →
	Exact match “SessionM is a customer engagement and loyalty platform empowering the world’s most innovative brands to forge stronger and more profitable customer relationships.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Customersai	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	11-50	33 contacts →
	Exact match “CustomersAI works with brands across the DTC ecosystem, and we’re proud official partners of Klaviyo, Shopify, Meta, and Google.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Awarex	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	11-50	18 contacts →
	Exact match “AwareX is the only digital customer engagement solution that enables businesses to build customer loyalty and maximize revenue opportunities - right out of the box.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Customer Portfolios	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	11-50	15 contacts →
	Exact match “Customer Portfolios is a marketing technology leader that empowers its global clients to maximize the value of each customer.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Cohora	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	11-50	9 contacts →
	Exact match “Cohora is a customer engagement and analytics platform for ecommerce retention.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Pointillist	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	51-200	7 contacts →
	Exact match “Genesys’s award-winning Pointillist Customer Journey Management Platform enables organizations to deliver frictionless, connected and personalized experiences.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Connect NOW INC	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	11-50	6 contacts →
	Exact match “In our fast-paced, on-demand world, consumers expect fast solutions in their moment of need.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	L2l Creative Group	Exact match	Boston, MA, United StatesHQ recorded Nov 5, 2026	1-10	1 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “customer engagement platform developers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 14 of 25 customer engagement platform developers based in Boston, United States

See the full list, filter by size, metro and specialty, and access 1,956 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Nov 5, 2026

56.0%Verified-email coverage

139.7Average contacts per company

11-50Median size (employees)

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 25 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Boston, United States whose business descriptions match “customer engagement platform developers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,956 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Customer engagement platform developers by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “customer engagement platform developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer engagement platform developers are there based in Boston, United States?

RevenueBase identified 25 company matches for customer engagement platform developers associated with Boston, United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Klaviyo tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most customer engagement platform developers?

New York leads the United States with 109 company records, followed by San Francisco (81) and Austin (42). Boston has 25.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,956 professional contacts with verified work emails tracked across these 25 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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 SmartSearch, 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.