Company lists · Data refreshed September 2026

Top 25 Account engagement platforms based in the United States

Name: Account engagement platforms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 1,405 companies tracked

RevenueBase identified 1,405 account engagement platforms headquartered in the United States as of September 2026 and tracks 162,616 professional contacts across them, including 94,579 with verified work emails. New York is the largest hub.

This list covers account engagement platforms headquartered in the 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 27, 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 27, 2026 86% judged on-target in blind review

1,405Companies

162,616Contacts tracked

94,579Verified emails

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The 25 largest account engagement platforms based in the United States

Ranked by team size

Top 25 of 1,405 account engagement platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to account engagement platforms: 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	Salesforce	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	10001+	86,470 contacts →
	Partial evidence “We're the #1 AI CRM-where humans with agents drive customer success together with AI, data, and Customer 360 apps on one platform.” Source: RevenueBase Database · checked Sep 27, 2026
2	Hubspot	Partial evidence	Cambridge, MA, United StatesHQ checked Sep 27, 2026	5,001-10,000	11,077 contacts →
	Partial evidence “HubSpot is a leading agentic customer platform that provides software and support to help businesses grow better.” Source: RevenueBase Database · checked Sep 27, 2026
3	Twilio	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	5,001-10,000	6,047 contacts →
	Strong evidence “Today's leading companies trust Twilio's Customer Engagement Platform (CEP) to build direct, personalized relationships with their customers everywhere in the world.” Source: RevenueBase Database · checked Sep 27, 2026
4	Zoominfo	Partial evidence	Vancouver, WA, United StatesHQ checked Sep 27, 2026	1,001-5,000	4,029 contacts →
	Partial evidence “ZoomInfo (NASDAQ: GTM) is the go-to-market platform that helps businesses find, acquire and grow their customers.” Source: RevenueBase Database · checked Sep 27, 2026
5	Klaviyo	Indirect evidence	Boston, MA, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,789 contacts →
	Indirect evidence “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Source: RevenueBase Database · checked Sep 27, 2026
6	Zeta Global	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,595 contacts →
	Indirect evidence “At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.” Source: RevenueBase Database · checked Sep 27, 2026
7	THRYV	Partial evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,412 contacts →
	Partial evidence “Thryv is an AI-powered platform built to help small businesses get found, win customers, and drive repeat sales.” Source: RevenueBase Database · checked Sep 27, 2026
8	BRAZE	Strong evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,142 contacts →
	Strong evidence “Braze is the leading customer engagement platform that empowers brands to Be Absolutely Engaging.™ Braze allows any marketer to collect and take action on any amount of data from…” Source: RevenueBase Database · checked Sep 27, 2026
9	Medallia	Partial evidence	Mclean, VA, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,006 contacts →
	Partial evidence “Medallia is the enterprise experience platform that turns every signal into decisive action.” Source: RevenueBase Database · checked Sep 27, 2026
10	Optimizely	Partial evidence	New York, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,584 contacts →
	Partial evidence “Optimizely is the AI platform for marketing, built for the experience-makers who shape how brands show up in the world.” Source: RevenueBase Database · checked Sep 27, 2026
11	Appsflyer	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,516 contacts →
	Indirect evidence “AppsFlyer is the Modern Marketing Cloud that helps businesses transform complex data into clarity and growth.” Source: RevenueBase Database · checked Sep 27, 2026
12	Intuit Mailchimp	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,483 contacts →
	Indirect evidence “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Source: RevenueBase Database · checked Sep 27, 2026
13	Attentive	Indirect evidence	New York, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,287 contacts →
	Indirect evidence “Attentive® knows personalized customer experiences require both powerful technology and the right people behind it.” Source: RevenueBase Database · checked Sep 27, 2026
14	Centro	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	501-1,000	1,178 contacts →
	Indirect evidence “Basis Technologies is a global provider of workflow automation, intelligence and programmatic trading software for the marketing enterprise.” Source: RevenueBase Database · checked Sep 27, 2026
15	Pipedrive	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	970 contacts →
	Indirect evidence “Founded in 2010, Pipedrive is an easy and effective sales CRM that drives small business growth.” Source: RevenueBase Database · checked Sep 27, 2026
16	Moengage	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	501-1,000	908 contacts →
	Strong evidence “MoEngage is an agentic customer engagement platform for the customer-obsessed marketers and product owners.” Source: RevenueBase Database · checked Sep 27, 2026
17	Activecampaign	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1,001-5,000	863 contacts →
	Partial evidence “ActiveCampaign is the AI-first autonomous marketing platform built to transform how marketers, agencies, and entrepreneurs work.” Source: RevenueBase Database · checked Sep 27, 2026
18	Marigold	Indirect evidence	Nashville, TN, United StatesHQ checked Sep 27, 2026	201-500	820 contacts →
	Indirect evidence “Marigold is a global marketing technology company focused on delivering relationship marketing solutions for growing organizations.” Source: RevenueBase Database · checked Sep 27, 2026
19	Iterable	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	501-1,000	771 contacts →
	Strong evidence “Iterable is the AI customer engagement platform built for enterprise scale, loved by teams, and trusted by global brands like Priceline, Fabletics, Blockchain, and Box.” Source: RevenueBase Database · checked Sep 27, 2026
20	Khoros	Indirect evidence	Austin, TX, United StatesHQ checked Sep 27, 2026	501-1,000	763 contacts →
	Indirect evidence “Khoros' award-winning enterprise software makes it easier for complex brands to engage with customers at scale across digital, social, and brand-owned channels.” Source: RevenueBase Database · checked Sep 27, 2026
21	Applovin	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 27, 2026	201-500	733 contacts →
	Indirect evidence “AppLovin helps businesses of any size reach over a billion people who play mobile games every day.” Source: RevenueBase Database · checked Sep 27, 2026
22	Clevertap	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	501-1,000	702 contacts →
	Strong evidence “CleverTap is the leading all-in-one customer engagement platform that helps brands unlock limitless customer lifetime value.” Source: RevenueBase Database · checked Sep 27, 2026
23	Movable INK	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	672 contacts →
	Indirect evidence “Movable Ink helps marketers create more relevant customer experiences across email, mobile, and web through data activation, AI-powered decisioning, and personalization at scale.” Source: RevenueBase Database · checked Sep 27, 2026
24	On24	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	501-1,000	622 contacts →
	Indirect evidence “ON24, a Cvent company, is on a mission to help businesses bring their go-to-market strategy into the AI era and drive cost-effective revenue growth.” Source: RevenueBase Database · checked Sep 27, 2026
25	Tealium	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 27, 2026	501-1,000	588 contacts →
	Indirect evidence “Tealium helps companies collect, govern, and enrich their customer data in real-time to power AI initiatives and delight customers in the moments that matter.” Source: RevenueBase Database · checked Sep 27, 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: account engagement platforms. 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 account engagement platforms.
Partial evidence: Its own public description names part of account engagement platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name account engagement platforms. 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 1,405 account engagement platforms based in the United States

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Account engagement platforms based in the United States at a glance

As of Sep 27, 2026

58.2%Verified-email coverage

115.7Average contacts per company

11-50Median size (employees)

7.7%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

635

11-50

485

51-200

179

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,405 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 account engagement platforms, 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 the United States whose own description of what they do matches “account engagement platforms”. 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 account engagement platforms), 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 account engagement platforms, and records with no verified work email. Companies headquartered outside United States 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, 94,579 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 27, 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.

Account engagement platforms by metro

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 account engagement platforms, 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 account engagement platforms are there based in the United States?

RevenueBase identified 1,405 account engagement platforms headquartered in the 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?

Salesforce, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most account engagement platforms?

New York leads with 108 headquartered companies, followed by San Francisco (76) and Austin (40).

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 94,579 verified decision-maker contacts tracked across these 1,405 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 27, 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.