Manage Fastmail mail, mailbox, identity, contact, and calendar workflows through JMAP API calls with safe batching and token hygiene.
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Select your agent
Option 1: Install via CLI (recommended)
Recommended (no pre-install needed)
npx clawhub@latest --dir ~/.claude/skills install fastmail-apiOr via clawhub CLI (if already installed)
clawhub --dir ~/.claude/skills install fastmail-apiβ οΈ Requires Node.js 18+. No Node? Use Option 2 below to download the ZIP instead. Install Node.js β
Option 2: Manual install (no Node required)
Download the ZIP, extract it, and place the folder at the path below. Restart your agent to activate.
Install path
~/.claude/skills/fastmail-api/π‘Extract and place the folder at the path above, then restart your agent.
Category
π¬CommunicationPlatforms
What Fastmail API can do for your AI workflow
Fastmail mail, mailbox, directly from your Claude conversation
Works across Claude, Cursor, OpenClaw β install once, use everywhere
One-command installation β no complex setup required
Combine with other skills to build powerful multi-step AI workflows
Try these prompts with your AI agent after installing Fastmail API
Send a Slack message to the #engineering channel about the deployment
Formats and sends the message with relevant context, tagging the right people
Summarize all unread messages in my inbox from today
Reads messages across connected channels and returns a prioritized summary
Draft a reply to this customer complaint and send it for review
Writes an empathetic, professional response and routes it to the approval queue
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Staying on top of communications across multiple channels is a real challenge for modern teams. Fastmail API helps by enabling manage fastmail mail, mailbox, identity, contact, and calendar workflows through jmap api calls with safe batching and token hygiene directly from your AI assistant, without switching apps or logging into separate platforms.
Fastmail API works across Claude, Cursor, OpenClaw through the Model Context Protocol (MCP) β an open standard that lets AI clients share tools and skills without lock-in. Because MCP is platform-agnostic by design, you install Fastmail API once and it becomes available across all your AI clients. Whether you're working in Claude for focused sessions or Cursor for integrated workflows, the skill behaves consistently.
To install Fastmail API, copy the skill folder to `~/.claude/skills/fastmail-api/` for use across all your projects, or `.claude/skills/fastmail-api/` for a single project. Restart Claude and the skill is immediately active β invoke it with `/fastmail-api` or just describe your goal and the AI will pick it up automatically.
Fastmail API has 288 installs and is part of the growing Communication skill ecosystem on DiscoverAISkills. Like all skills on DiscoverAISkills, it is free to install and use. The broader AI skills ecosystem continues to expand as developers contribute new capabilities across categories like developer tools, data analysis, writing, automation, and more.
Place the skill folder at ~/.claude/skills/fastmail-api/ for personal use (all projects), or .claude/skills/fastmail-api/ for project-specific use. Restart your AI client, then invoke with /fastmail-api or let the AI discover it automatically.
Fastmail API supports Claude, Cursor, OpenClaw. It integrates seamlessly with these AI platforms to extend their capabilities.
Fastmail API is free to install. Check the repository for licensing information.
Manage Fastmail mail, mailbox, identity, contact, and calendar workflows through JMAP API calls with safe batching and token hygiene.
Fastmail
Manages Fastmail email and calendar via JMAP and CalDAV APIs. Use for emails (read, send, reply, search, organize, bulk operations, threads) or calendar (events, reminders, RSVP invitations). Timezone auto-detected from system.
Fastmail JMAP
Give your AI agent email superpowers via Fastmail JMAP. Read, search, send, move, trash β zero deps. By The Agent Wire (theagentwire.ai)
Fastmail Suite
Secure, safe-by-default Fastmail integration (email, contacts, calendar) via JMAP + CalDAV. Use when you want to verify Fastmail setup, triage/search email,...
Fastmail API is categorized under Communication. These skills help AI agents perform specialized tasks in this domain.