What is AgentMail?
API that gives each AI agent its own email address to send, receive and reply in threads.
Who is AgentMail best for?
AgentMail is best for developers building AI agents that need their own email inboxes to send, receive and reply.
Support and ops agents
An agent reads incoming mail, replies in the same thread and can hand a conversation to a person when needed.
Inboxes at scale
One API call creates an inbox, and the Startup plan covers 150 inboxes on 150 custom domains.
Reading invoices and forms
Webhooks and websockets pass each new message and its attachments to your agent as it arrives.
Agents in chat apps and IDEs
SDKs, an SMTP relay and an MCP server come with every plan, the free one included.
How much does AgentMail cost?
AgentMail has a free plan with 3 inboxes and 3,000 emails a month; paid plans are $20 a month for Developer and $200 a month for Startup.
- 3 inboxes and 3,000 emails a month, up to 100 a day
- 1 custom domain and 3 GB storage
- Sent emails carry a "Sent via AgentMail" footer
- 10 inboxes and 10,000 emails a month
- 10 custom domains, 10 GB storage, 2 seats
- No AgentMail footer, email support
- 150 inboxes and up to 15,000 emails a day
- 150 custom domains, unlimited storage, 10 seats
- SOC 2 report
Enterprise, with unlimited inboxes, white-label, EU region or your own cloud, dedicated IPs and SSO, is priced by sales. On Developer and Startup, extra inboxes, extra domains and each extra 1,000 emails a month cost $2 a month each, and an extra seat $5 a month. Billed yearly, Developer is $192 a year. Full pricing on agentmail.to. We checked these prices on .
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How do I connect AgentMail to my AI agent?
AgentMail MCP is AgentMail's official MCP server. Add it to your agent once, then ask it to set up AgentMail inboxes so agents can handle email on their own.
Gives your agent its own AgentMail addresses to receive, reply to and file email, useful for sign-up flows, support triage or any job that runs over email.
$ claude mcp add --transport http agentmail https://mcp.agentmail.to/mcp
Claude Code connects to AgentMail over the web.
Run /mcp and sign in to AgentMail in the browser.
Then ask your agent
- Runs
- On the web
- Sign-in
- OAuth
- Checked
- Answered 13 Nov
- Guide
- agentmail.to
What are the best AgentMail alternatives?
Two tools on Recaply do AgentMail's job. Inbound is open source, so you can run it on your own server.
Questions about AgentMail
What is AgentMail?
API that gives each AI agent its own email address to send, receive and reply in threads.
Who is AgentMail for?
AgentMail is best for developers building AI agents that need their own email inboxes to send, receive and reply.
Is AgentMail free?
Yes. AgentMail has a free plan: 3 inboxes and 3,000 emails a month, up to 100 a day.
How much does AgentMail cost?
AgentMail's paid plans are Developer at $20 per month and Startup at $200 per month.
Does AgentMail have an MCP server?
Yes. AgentMail MCP is AgentMail's official MCP server, so agents such as Claude Code, Cursor, Codex and GitHub Copilot can set up AgentMail inboxes so agents can handle email on their own. AgentMail runs it on the web and you sign in with your AgentMail account.
Is there an open source alternative to AgentMail?
Yes. Inbound is an open source tool that does the same job, so you can run your own.
What are the best AgentMail alternatives?
The closest alternatives on Recaply are Nylas and Inbound.
Where can I try AgentMail?
On its official website, agentmail.to.
Can AgentMail send from my own domain?
Yes. AgentMail's Free plan includes 1 custom domain, Developer 10 and Startup 150, and every plan handles DKIM, SPF and DMARC. Extra domains on paid plans cost $2 a month each.
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