AI agent email use cases

Every place an agent needs an inbox.

mails0 is built for agent workflows where email is not marketing infrastructure. It is identity, verification, inbox memory, and a tool surface for coding agents, browser agents, CI tests, and self-hosted teams.

Start with the email API Self-host on Cloudflare

Core use cases

OTP workflow

Email verification API for agents

Receive verification codes and confirmation emails from account creation, login, and 2FA flows.

MCP tools

Email MCP server

Expose inbox, search, send, threads, and code extraction to Claude Desktop, Cursor, Windsurf, and compatible clients.

Coding agent

Claude Code email

Give Claude Code a scoped mailbox for signup flows, repo notifications, and controlled email access.

Testing

Playwright email verification

Test real signup and verification journeys without mocking email or using a human inbox.

Infrastructure

Cloudflare email for agents

Run the agent email stack on Workers, D1, R2, and Email Routing.

Comparison

AgentMail alternative

Choose open-source self-hosting when data control and infrastructure ownership matter more than managed SaaS.

How to choose the right entry point

If the user is searching for...	Send them to...	Why
Agent inbox API, agent mailbox API	Email API for AI agents	Commercial overview and product fit.
OTP, code extraction, signup automation	Email verification API	Immediate pain and high conversion intent.
MCP, Claude Desktop, Cursor email tools	Email MCP server	Tool integration search intent.
Claude Code email, coding agent email	Claude Code email	Specific runtime with clear setup path.
Playwright email verification	Playwright email verification	Developer testing workflow with existing search demand.
Self-hosted Cloudflare agent email	Cloudflare email for agents	Infrastructure buyer intent.