Company lists · Data refreshed October 2026

Top 25 AI email assistant software companies based in the United States

RevenueBase identified 103 company matches for AI email assistant software companies associated with the United States as of October 2026 and tracks 848 professional contacts across them, including 220 with verified work emails. San Francisco is the largest hub.

This list covers company matches for AI email assistant software companies associated with the 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 October 20, 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 Oct 20, 2026 How this list was built
103Companies
848Contacts tracked
220Verified emails
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The 25 largest AI email assistant software companies based in the United States

Ranked by team size
Top 25 of 103 company matches for AI email assistant software companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 20, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSan Francisco, CA, United StatesHQ recorded Oct 20, 202651-200130 contacts →

Exact match

“AI-native email for high-performing teams Fly through your inbox twice as fast, be more responsive to what matters most, and save 4 hours per person every single week.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
2Exact matchSeattle, United StatesHQ recorded Oct 20, 202651-200101 contacts →

Exact match

“Read AI is an AI copilot for wherever you work, making your meetings, emails, and messages more productive with summaries, content discovery, and recommendations.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
3Exact matchNew York, NY, United StatesHQ recorded Oct 20, 202611-5065 contacts →

Exact match

“Lavender is your AI Email Coach It combines everything you need to easily write sales emails that get replies.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
4Exact matchSan Francisco, United StatesHQ recorded Oct 20, 202611-5036 contacts →

Exact match

“Lindy is the AI teammate that does real work for your whole team.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
5Exact matchSan Francisco, United StatesHQ recorded Oct 20, 202611-5024 contacts →

Exact match

“Email was never meant to be this busy.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
6Exact matchSacramento, CA, United StatesHQ recorded Oct 20, 202611-5024 contacts →

Exact match

“We believe in the power of meaningful communication.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
7Exact matchMountain View, CA, United StatesHQ recorded Oct 20, 202611-5016 contacts →

Exact match

“Boomerang is the leader in thoughtful email productivity software that empowers people to focus on what matters on the world’s top email platforms.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
8Exact matchRedwood City, CA, United StatesHQ recorded Oct 20, 202611-5016 contacts →

Exact match

“Tanka is your 24/7 AI co-founder.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
9Exact matchSan Francisco, CA, United StatesHQ recorded Oct 20, 202611-508 contacts →

Exact match

“Do you want to make the most of your time?⌛ We made you over 60 free productivity tools for Gmail.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
10Exact matchNewark, DE, United StatesHQ recorded Oct 20, 20261-107 contacts →

Exact match

“Receptive AI builds AI clones, digital versions of you that run your day.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
11Exact matchLos Angeles, CA, United StatesHQ recorded Oct 20, 202611-507 contacts →

Exact match

“Parserr is a leading provider of AI-powered email parsing and workflow automation solutions designed to help businesses automate their email data extraction, save time, and…”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
12Exact matchSan Francisco, CA, United StatesHQ recorded Oct 20, 202611-506 contacts →

Exact match

“Shortwave is the AI agent app for business communications.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
13Exact matchDover, DE, United StatesHQ recorded Oct 20, 20261-106 contacts →

Exact match

“The Librarian is a mobile-first AI virtual assistant for real estate agents.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
14Exact matchSan. Francisco, CA, United StatesHQ recorded Oct 20, 20261-106 contacts →

Exact match

“Multiplayer is your AI executive assistant that organizes your inbox, writes follows ups in your tone and takes meeting notes.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
15Exact matchNewark, DE, United StatesHQ recorded Oct 20, 20261-104 contacts →

Exact match

“At Sortd, we are dedicated to revolutionizing the way teams work and communicate.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
16Exact matchSeattle, United StatesHQ recorded Oct 20, 20261-104 contacts →

Exact match

“Support your people - with AI.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
17Exact matchLos Gatos, NV, United StatesHQ recorded Oct 20, 20261-103 contacts →

Exact match

“Polymail is your daily command center for closing deals, booking meetings, and tracking every touchpoint-without juggling plug-ins, tabs, or bloated CRMs.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
18Exact matchMountain View, CA, United StatesHQ recorded Oct 20, 20261-103 contacts →

Exact match

“DearFlow is building the first PROACTIVE personal assistant that anticipate your administrative tasks and get them done before you even notice.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
19Exact matchPortland, OR, United StatesHQ recorded Oct 20, 20261-102 contacts →

Exact match

“We’re on a mission to reimagine productivity and unburden busy consumers from their digital clutter.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
20Exact matchSheridan, WY, United StatesHQ recorded Oct 20, 202611-502 contacts →

Exact match

“BlinkGPT AI Powered cold email outreach on Autopilot”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
21Exact matchColumbia, SC, United StatesHQ recorded Oct 20, 20261-101 contacts →

Exact match

“Lucky Duck Software is the developer of CleanOut for Office, a personal email assistant designed for overworked executives and professionals who can't keep up with their current…”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
22Exact matchSunnyvale, CA, United StatesHQ recorded Oct 20, 20261-101 contacts →

Exact match

“Boost your workplace productivity by using Jelled.ai to uncover actionable insights and trends from your emails and Slack data.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
23Exact matchPalm Beach Gardens, FL, United StatesHQ recorded Oct 20, 20261-101 contacts →

Exact match

“NotGPT: Your AI assistant who understands your job.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
24Exact matchCampbell, CA, United StatesHQ recorded Oct 20, 20261-101 contacts →

Exact match

“A startup that develops email tools for the Artificial Intelligence Age.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
25Exact matchSan Francisco, CA, United StatesHQ recorded Oct 20, 20261-101 contacts →

Exact match

“EquaTalent builds AI agents that replace repetitive business workflows.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase

Showing 25 of 103 AI email assistant software companies based in the United States

See the full list, filter by size, metro and specialty, and access 220 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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AI email assistant software companies based in the United States at a glance

As of Oct 20, 2026
25.9%Verified-email coverage
8.2Average contacts per company
1-10Median size (employees)
27.2%Largest-city concentration · San Francisco
Oct 20, 2026Page data refreshed

Companies by employee count

1-10
80
11-50
20
51-200
3

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 103 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 the United States whose business descriptions match “AI email assistant software companies” 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 220 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 October 20, 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.

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 “AI email assistant software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many AI email assistant software companies are there based in the United States?

RevenueBase identified 103 company matches for AI email assistant software companies associated with the United States as of October 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?

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

Which city has the most AI email assistant software companies?

San Francisco leads with 28 company records, followed by New York (8) and Boston (5).

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 220 professional contacts with verified work emails tracked across these 103 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 October 20, 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.