Company lists · Data refreshed September 2026

Top 25 Customer engagement companies based in San Francisco, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 92 companies tracked

RevenueBase identified 92 customer engagement companies headquartered in San Francisco, United States as of September 2026 and tracks 11,648 professional contacts across them, including 5,659 with verified work emails. New York is the largest hub.

This list covers customer engagement companies headquartered in San Francisco, 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 21, 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 21, 2026 86% judged on-target in blind review

92Companies

11,648Contacts tracked

5,659Verified emails

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The 25 largest customer engagement companies based in San Francisco, United States

Ranked by team size

Top 25 of 92 customer engagement companies based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to customer engagement 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	Twilio	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 21, 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 21, 2026
2	Moengage	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 21, 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 21, 2026
3	Iterable	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 21, 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 21, 2026
4	Clevertap	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 21, 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 21, 2026
5	On24	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 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 21, 2026
6	Airship	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	294 contacts →
	Partial evidence “Airship is the only mobile-first customer experience platform that empowers brands to build unified cross-channel experiences and AI-powered journeys that deliver measurable…” Source: RevenueBase Database · checked Sep 21, 2026
7	Decagon	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	501-1,000	294 contacts →
	Partial evidence “Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experiences.” Source: RevenueBase Database · checked Sep 21, 2026
8	Firstup	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	270 contacts →
	Indirect evidence “The Firstup Intelligent Communication Platform equips organizations to improve productivity, retention, labor efficiency, safety compliance, and revenue performance by activating…” Source: RevenueBase Database · checked Sep 21, 2026
9	Gladly	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	218 contacts →
	Partial evidence “For business leaders who want to get AI right, Gladly is the only customer experience AI that delivers the cost savings you need AND the customer devotion that drives lasting…” Source: RevenueBase Database · checked Sep 21, 2026
10	Agentforce Commerce	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	10001+	175 contacts →
	Indirect evidence “The future of business is CRM + AI + Data + Trust.” Source: RevenueBase Database · checked Sep 21, 2026
11	Mailerlite	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	51-200	122 contacts →
	Indirect evidence “In 2005, we started as a web design agency, but we soon discovered email marketing and fell in love with it.” Source: RevenueBase Database · checked Sep 21, 2026
12	Demandforce	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	104 contacts →
	Indirect evidence “Founded in 2003, Demandforce helps small businesses thrive in the Internet economy.” Source: RevenueBase Database · checked Sep 21, 2026
13	Blueshift	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	51-200	97 contacts →
	Partial evidence “Blueshift, headquartered in San Francisco, enables brands to automate and personalize engagement across every marketing channel.” Source: RevenueBase Database · checked Sep 21, 2026
14	Leanplum By Clevertap	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	51-200	97 contacts →
	Partial evidence “For app-first companies, Leanplum is the only solution that helps personalize and optimize all customer touchpoints, both inside and outside the app.” Source: RevenueBase Database · checked Sep 21, 2026
15	connectly.ai	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	51-200	59 contacts →
	Partial evidence “Connectly is a global platform that helps brands sell more, build customer loyalty, and deliver efficient support through intelligent conversations, by using the power of WhatsApp…” Source: RevenueBase Database · checked Sep 21, 2026
16	LAYER	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	11-50	58 contacts →
	Indirect evidence “Conversation builds relationship.” Source: RevenueBase Database · checked Sep 21, 2026
17	Clerk Chat	Indirect evidence	San Francisco, United StatesHQ checked Sep 21, 2026	n/a	49 contacts →
	Indirect evidence “Clerk Chat is a conversational messaging platform which amplifies human agents with AI agents.” Source: RevenueBase Database · checked Sep 21, 2026
18	lava.ai	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	11-50	47 contacts →
	Partial evidence “Customers expect instant gratification – yet existing systems were architected for slower, scheduled responses using historical data after the customer has left.” Source: RevenueBase Database · checked Sep 21, 2026
19	Chatfuel	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	11-50	45 contacts →
	Indirect evidence “Chatfuel is the #1 platform for businesses that sell and grow through social media.” Source: RevenueBase Database · checked Sep 21, 2026
20	Questera	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	11-50	33 contacts →
	Strong evidence “The First Agentic Customer Engagement Platform.” Source: RevenueBase Database · checked Sep 21, 2026
21	Waymore	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	27 contacts →
	Indirect evidence “WayMore is an innovative and powerful marketing and business operations automation software that enables a company to reach its goals.” Source: RevenueBase Database · checked Sep 21, 2026
22	Heymarket	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	11-50	26 contacts →
	Indirect evidence “Hey there!” Source: RevenueBase Database · checked Sep 21, 2026
23	Mcorpcx	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “McorpCX is a leading customer experience services company delivering consulting and technology solutions to customer-centric organizations since 2002.” Source: RevenueBase Database · checked Sep 21, 2026
24	Coretava	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “Welcome to Coretava, a 360-degree business growth platform that helps companies achieve their full potential!” Source: RevenueBase Database · checked Sep 21, 2026
25	Markovml	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	1-10	19 contacts →
	Indirect evidence “MarkovML is a sales intelligence engine that accelerates every aspect of your campaign execution.” Source: RevenueBase Database · checked Sep 21, 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 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 companies.
Partial evidence: Its own public description names part of customer engagement 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 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 25 of 92 customer engagement companies based in San Francisco, United States

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Customer engagement companies based in San Francisco, United States at a glance

As of Sep 21, 2026

48.6%Verified-email coverage

126.6Average contacts per company

11-50Median size (employees)

115.2%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 92 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 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 San Francisco, United States whose own description of what they do matches “customer engagement 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 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 companies, and records with no verified work email. Companies headquartered outside San Francisco 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, 5,659 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 21, 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 companies by metro in the United States

Customer engagement companies in New York106
Customer engagement companies in San Francisco92
Customer engagement companies in Atlanta37
Customer engagement companies in Austin36
Customer engagement companies in Los Angeles36
Customer engagement companies in Dallas33
Customer engagement companies in Miami33
Customer engagement companies in Chicago31
Customer engagement companies in Boston28

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 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 companies are there based in San Francisco, United States?

RevenueBase identified 92 customer engagement companies headquartered in San Francisco, 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?

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

Which city has the most customer engagement companies?

New York leads with 106 headquartered companies, followed by San Francisco (92) and Atlanta (37).

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 5,659 verified decision-maker contacts tracked across these 92 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 21, 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.