Spark for Claude

Give Claude access to Spark - read, draft, triage, and act on your email, calendars, meetings, and contacts.

What Claude can do:

• Search and browse your emails across all connected accounts
• Read full threads with bodies and attachments
• Read individual attachment contents directly (images, PDFs, text files)
• List folders and shared inboxes
• Look up contacts
• Check calendar events and find free time slots for scheduling
• Review meeting transcripts, summaries, and notes
• Show team info, members, and assignments
• Compose drafts - new messages, replies, forwards, with attachments
• Post team chat comments on shared threads
• Triage messages - archive, pin, snooze, move, label, mark as done, share with team, assign and delegate
• Reclassify smart categories (Priority, People, Notifications, Newsletters)
• Manage contacts - block/accept, change category, mark important/primary, toggle auto-summary

Requirements

• macOS or Windows with a recent build of Spark Desktop, signed in to at least one account.
• Spark CLI enabled: in Spark, go to Settings → AI Agents → Spark CLI Setup and follow the prompts. On Windows, restart Claude Desktop afterwards so it inherits the updated PATH (the same caveat as opening a new terminal).
• For each account or shared inbox, choose the access level Claude should have: Settings → AI Agents (read-only or triage). Read-only allows browsing and reading; triage additionally allows drafts, comments, and email/contact actions. Shared inboxes can have a different level than their parent account.
• Claude Desktop.

Install the extension (Claude Desktop)

1. Download Spark.mcpb
2. Open Claude Desktop and go to Settings → Extensions.
3. Click Advanced settings, then Install… and choose the downloaded Spark.mcpb file.

Install the companion skill (optional)

The skill extends the extension for more complex use cases.

1. Download Spark.skill
2. Double-click the downloaded Spark.skill file to install it into Claude Desktop.

Privacy Policy

This extension is a local bridge between Claude Desktop and Spark Desktop on your computer - it does not collect or transmit data on its own, so use of it is governed by Spark's official privacy policy: https://sparkmailapp.com/privacy.

License

MIT © Spark Mail Limited