CATEGORY

Best Email AI Tools

11 tools compared · 2026

11 ai email startups tracked, with the largest concentration in US. Total tracked funding: $175.2M.

All (11) By country Top ranked By funding

Tracked

11

Total Raised

$175.2M

Countries

2

Active Deals

0

Top by score

View all 11 →

beehiiv — $45.5M

Fyxer AI — $30M

Supafax San Francisco, US $500K

Ocean Security New York, US $28M

Moosend London, United Kingdom —

AegisAI Mountain View, US $13M

Superhuman US —

Shortwave US —

Singulate — $2.3M

Lindy San Francisco, US $49.9M

Funding by year — AI Email

2021 → 2026

$11M

’21

$35M

’23

$500K

’26

Top countries

By startup count

US 6
United Kingdom 1

Stage breakdown

Latest round type

Seed 4
Series B 3
Pre-Seed 1

Top investors backing AI Email

Lightspeed Venture Partners

Picture Capital

Battery Ventures

Foundation Capital

Recent rounds in AI Email

Date	Startup	Round	Amount
Jan 2026	Supafax	Seed	$500K
Jan 2023	Lindy	Series B	$35M
Jan 2021	Lindy	Series A	$11M

All AI Email startups

Page 1

beehiiv

Fyxer AI

Supafax

AI assistant for your email and calendar

Mindy

Ocean Security

AI security agents that investigate every email's intent in real time

Moosend

United Kingdom est. 2011

Affordable email marketing and automation platform

Superhuman

The fastest email experience ever made, with AI triage and reply.

Shortwave

AI-native email built on Gmail with bundles, AI search, and chat.

AegisAI

Autonomous AI agents that stop phishing before it reaches the inbox

Singulate

Lindy

Build AI assistants in minutes