Connect Fastmail to Claude —
and Cursor, ChatGPT, any MCP client
Give your AI agent a real Fastmail inbox in minutes. Read, search, send, reply, schedule and organize mail with a single app password — and use the same inbox in every MCP client, not just one.
How Fastmail connects: an app password
Fastmail connects over IMAP/SMTP using a Fastmail app password — generate one in Fastmail under Settings → Privacy & Security → App passwords, paste it into mcpemails, and you're connected. No OAuth dance, no browser pop-ups.
A Fastmail inbox your agent can actually use
Nine action-based MCP tools — not just drafts. Your agent finishes the job inside Fastmail.
- 01Read
Read & search mail
List, read and search across folders — find that invoice, summarize a thread, or pull the latest from a sender.
- 02Send
Send, reply & forward
Compose and send real messages, reply in-thread, and forward — directly from Fastmail, not as a draft you finish by hand.
- 03Schedule
Schedule for later
Queue a message to go out at the right time, so your agent can draft now and send on schedule.
- 04Organize
Move, flag, archive, delete
Keep the inbox tidy — file mail into folders, flag what matters, archive the rest, or delete on request.
Connect Fastmail in four steps
From sign-up to first AI email in a couple of minutes.
Create a free account
Sign up for mcpemails — no card required. The free plan gives you unlimited inboxes and tool calls.
Generate a Fastmail app password
In Fastmail, go to Settings → Privacy & Security → App passwords and create one for mail (IMAP/SMTP).
Paste it into mcpemails
Add your Fastmail address and the app password to connect the inbox securely.
Paste the MCP URL into your AI
Drop https://mcpemails.com/api/mcp into Claude, Cursor or ChatGPT, authorize, and your agent has the inbox.
Give your AI a Fastmail inbox
Connect Fastmail in minutes — unlimited inboxes and tool calls on the free plan, no card required.