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Fastmail MCP
42
Stack Score
Editorial pick✓ Verified workingMCP server
Fastmail MCP logo

Fastmail MCP

Fastmail email + calendar ops from Claude.

Try Fastmail MCP

Best for

Best for privacy-conscious individuals on Fastmail.

At a glance

Pricing
open-source
Setup time
20 minutes
Learning curve
moderate
Last verified
5/26/2026

What we love

  • ✓Privacy-first email
  • ✓Custom domains easy
  • ✓Strong masked-email feature

Where it falls short

  • −Fastmail subscription required
  • −API less rich than Gmail
  • −Smaller community

Pricing

✓ Pricing verified Jun 14, 2026

1 tier

Open-source

$0

perpetual

  • ✓MIT

Overview

MCP server for Fastmail — IMAP/SMTP + CalDAV operations. Privacy-first email + calendar provider exposed to Claude.

Key features

  • ●IMAP + SMTP ops
  • ●CalDAV calendar
  • ●Contacts + masking
  • ●App password auth
  • ●Custom domain support

Best use cases

Privacy-focused email ops

Let Claude operate on Fastmail for privacy-conscious users.

Masked email gen

Generate + manage masked emails via Claude for sign-ups.

Integrations

Fastmail
IMAP
CalDAV

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