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Integration

Fastmail

Private email: mailboxes, messages and contacts. Your client pastes their Fastmail key once, and your agent or your code works with their access.

Email

About Fastmail

Fastmail is a privacy-focused email service with mail, calendars and contacts, popular with small businesses that want independence from the big platforms.

Once your client connects Fastmail, your agent can read and organize their mailboxes and messages and manage their contacts.

Fastmail

Fastmail · Email

API key

Private email: mailboxes, messages and contacts

The client pastes their API token from Fastmail's settings. We store it encrypted.

Tested against Fastmail's live API.

Building with Fastmail? The docs have setup steps and code for every tool.

Open the Fastmail docs

Tools

Your agent calls any endpoint of Fastmail's API with the request tool, with the client's access attached.

Base URL for request

https://api.fastmail.com/jmap

  • request

    HTTPS ANY /v1/clients/{clientId}/fastmail/{path}

    Any endpoint of Fastmail's own API, with the client's access attached.

    servicestringrequired
    This service: fastmail
    methodstringrequired
    GET, POST, PUT, PATCH or DELETE
    pathstringrequired
    The path under https://api.fastmail.com/jmap
    queryobjectoptional
    Query parameters
    bodyobjectoptional
    A JSON body

Over MCP every tool also takes client_id, from list_clients. Over HTTPS send it as clientId to https://api.operate.as/v1.

What the client approves

  • Use the Fastmail key you paste, with only the access you gave that key

Related

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