AI API

AgentMail

API-first email platform that gives AI agents their own inboxes for two-way email communication.

agentmail.to

Verified API available Works with n8n Free tier

Quick facts
What is it	API-first email platform that gives AI agents their own inboxes for two-way email communication.
Pricing	Freemium — from $20/mo
Free tier	Yes
Platform	API
API	Yes
Works with	n8n
Best for	building AI customer service agents, automating email-based workflows
Domain registered	2024

Data updated Aug. 1, 2026

What does AgentMail do?

AgentMail is an API-first email platform designed specifically for AI agents that need to communicate via email. It provides dedicated email inboxes that AI systems can use to send, receive, and manage email conversations programmatically. Unlike traditional email APIs focused on one-way notifications, AgentMail enables full two-way communication where AI agents can read incoming messages, understand context, and reply appropriately within email threads.

The platform offers a comprehensive set of features including inbox management via REST API, support for email threads and replies, file attachments, real-time webhooks for instant notifications, custom domain support, and SDKs for popular programming languages. It handles the complex email infrastructure challenges like deliverability, spam prevention, and proper email headers, ensuring messages land in inboxes rather than spam folders. The service is built on redundant infrastructure across multiple regions for enterprise-grade reliability.

AgentMail is particularly valuable for developers building AI-powered customer service agents, automation tools that process email-based requests, and systems that need to handle document attachments sent via email. Companies using AgentMail typically need scalable email infrastructure for their AI applications without worrying about the underlying email delivery complexities, making it ideal for teams focused on building intelligent agent communication systems.

AI API Developer Tools

#ai agents#automation#developer tools#email api#email-inbox#sdk#webhooks

Key features

What makes it stand out

Create and manage email inboxes via API for AI agents

Handle email threads and replies programmatically

Support for file attachments in emails

Real-time event webhooks for instant notifications

Use custom domains for branded email addresses

Who is AgentMail for?

Who benefits most from this tool

building AI customer service agents

automating email-based workflows

processing document attachments via email

Pricing

Free tier available — start without a credit card

Free

3 inboxes
3 storage GB
100 emails daily
3,000 emails monthly
3 inboxes
3,000 emails/month
3 GB storage
No credit card required

Developer

$20.0/month

10 inboxes
10 storage GB
No limit emails daily
10 custom domains
10,000 emails monthly
10 inboxes
10,000 emails/month
10 GB storage
10 custom domains
Email support

Startup

$200.0/month

150 inboxes
150 storage GB
No limit emails daily
150 custom domains
150,000 emails monthly
150 inboxes
150,000 emails/month
150 GB storage
150 custom domains
Dedicated IPs
SOC 2 report
Slack channel support

Enterprise

Custom

Everything in Startup, plus:

Custom inboxes
Custom storage GB
No limit emails daily
Custom emails monthly
Everything in Startup tier
Bulk discounts
White-label platform
Usage-based pricing
EU region cloud
BYO cloud deployment
OIDC/SAML SSO

Trust & presence

Domain Domain registered 2024

Gallery

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