LaunchKit · 2026
Back to Skills

fastmail

Manages Fastmail email and calendar via JMAP and CalDAV APIs.

0
1.6k downloads
by @witooh

Setup & Installation

openclaw skills install @witooh/fastmail

Or with the ClawHub CLI, for registry-managed skill folders outside a full OpenClaw workspace:

npx clawhub install fastmail

Version History

v1.0.1Feb 5, 2026 - Version note by skill developer:

- No user-visible changes in this release. - No file changes detected compared to previous version.

What This Skill Does

Manages Fastmail email and calendar through JMAP and CalDAV APIs. Covers reading, sending, searching, and bulk-organizing emails, plus creating and managing calendar events, recurring schedules, reminders, and invitations. Timezone is auto-detected from the system or configurable via environment variable.

Handles both email and calendar in one skill with bulk operations and invitation RSVP, which normally require separate tools or manual browser steps.

When to use it

  • Searching inbox for invoices or receipts by keyword
  • Bulk archiving or deleting old emails at once
  • Creating recurring standup meetings with reminders
  • Accepting or declining calendar invitations
  • Replying to email threads without opening a browser

Example Workflow

Here's how your AI assistant might use this skill in practice.

INPUT

User asks: Find all emails about invoices and move them to the Archive folder

AGENT
  1. 1Call search_emails with query 'invoice' to retrieve matching email IDs
  2. 2Call list_mailboxes to find the Archive folder ID
  3. 3Call bulk_move_emails with the collected email IDs and the Archive mailbox ID
OUTPUT

All matching invoice emails moved to Archive in a single bulk operation

Requirements

Accounts, API keys, or tools you or your AI assistant may need to set up while using this skill.

FASTMAIL_API_TOKEN environment variable (from Fastmail Settings → Privacy & Security → Integrations)FASTMAIL_USERNAME environment variable (your Fastmail email address)FASTMAIL_PASSWORD environment variable (app password generated in Fastmail settings)Fastmail account