fastmail-mcp

Overview

This MCP server offers extensive functionality for interacting with Fastmail services through the JMAP API and CalDAV protocol. It provides comprehensive email operations including listing, searching, reading, sending, and managing emails with advanced features like threading, attachments, and bulk operations. The server also supports contact management and calendar functionality, automatically falling back to CalDAV for calendar access when JMAP is unavailable. The implementation is production-ready with clear documentation, multiple installation methods, and proper error handling.

Try asking AI

After installing, here are 6 things you can ask your AI assistant:

• check_function_availability

  Check what's available and get setup guidance

  Try:Check what functions are availableTry:Verify API permissions
• send_email

  Send an email with proper draft/sent handling

  Try:Send an email to john@example.comTry:Create a new email with subject 'Project Update'
• get_recent_emails

  Get the most recent emails from a mailbox

  Try:Show me my recent 10 emailsTry:Get latest emails from inbox
• advanced_search

  Advanced email search with multiple criteria

  Try:Search for emails from boss with attachmentsTry:Find unread emails from last week
• list_contacts

  List all contacts in your account

  Try:Show me all contactsTry:List everyone in my address book
• list_calendar_events

  List calendar events from your calendars

  Try:Show me my calendar for todayTry:List upcoming events
• get_email

  Get a specific email by ID

  Try:Retrieve email with ID abc123Try:Show me the full content of this email
• reply_email

  Reply to an existing email with proper threading

  Try:Reply to the last emailTry:Send a reply to message ID xyz789
• move_email

  Move an email to a different mailbox

  Try:Move this email to archive folderTry:Move email with ID abc123 to trash
• create_calendar_event

  Create a new calendar event

  Try:Schedule a meeting for tomorrow at 2pmTry:Create an event titled 'Team Standup'
• list_mailboxes

  Get all mailboxes in your account

  Try:Show me all my mailboxesTry:List all folders in my email account
• search_contacts

  Search contacts by name or email

  Try:Find contacts named JohnTry:Search for contacts with example.com email

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Installation

FAQ

What email operations does this server support?

The server supports comprehensive email operations including listing, searching, reading, sending, and managing emails. It also features advanced capabilities like threading, attachment handling, bulk operations, and statistics.

Does it support calendar access?

Yes, the server supports calendar operations through both JMAP (when available) and automatically falls back to CalDAV for calendar access since Fastmail doesn't currently expose calendar access via JMAP API tokens.

How do I get a Fastmail API token?

Log in to Fastmail web interface, go to Settings → Privacy & Security, find 'Connected apps & API tokens' section, click 'Manage API tokens', then click 'New API token' to generate a token.

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