Observed arrival · 2026-10-12

postkeep: a self-hosted mail server for AI agents

postkeep.dev Visit website

Editorial interest 78/100 Selection signal · not a rating of the site

An open-source MCP server that lets an AI agent search, read, reply to, and file mail across supported mailboxes.

Landing page captured for the 2026-10-12 issue.

For: People connecting AI agents to existing email accounts
Worth noticing: The master key decrypts saved mailbox logins; the setup instructions say to back it up separately.

Field notes

The quick-start gives Docker, Compose, and binary routes, and the deployment guide also names Fly.io and systemd. Operators need an HTTPS address, persistent storage, and a master key; the page notes that this key decrypts saved mailbox logins and recommends backing it up separately. The site also describes OAuth connections for agent apps and a webhook for new-mail notifications.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

⊠LoginAccess appeared gated

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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