# Lettio MCP Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## Lettio MCP

Private EU email for AI agents: read, search, reply, organize and send messages

- Record: https://musedirectory.ai/connector/lettio-mcp
- Category: Productivity
- Developer: Lettio
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, sign-in needed, 702ms, checked 2026-09-28T09:31:05Z
- Endpoint: https://mcp.lettio.eu/mcp
- Auth: Sign in with your account; Pricing: unknown
- Screening: Screened, no issues found (2026-09-24T23:41:02Z)
- Source: Found in the official MCP Registry (eu.lettio/mcp) https://registry.modelcontextprotocol.io/v0/servers?search=eu.lettio%2Fmcp

Connects Muse to Lettio's EU-hosted email service via JMAP protocol. Lets you read and search messages, reply to emails, organize your inbox, and send new messages through a privacy-focused email provider.

Example request: "Search my emails for invoices from last month and show me the totals"

How to connect: Lettio MCP is not in Muse's Connectors list yet, and it needs you to sign in with your Lettio MCP account. Apps that need this kind of sign-in usually cannot be used from a Muse chat yet. Follow it here and we will tell you when it reaches Muse.

Screening checks:
- MCP handshake: pass (Requires sign-in (publishes OAuth metadata))
- Domain against threat feeds (Cloudflare security DNS): pass (mcp.lettio.eu not flagged)
- Published packages against the OSV malicious-package database: pass (No malicious-package advisories)
- Hidden instructions or invisible characters in tool text: n/a (Tools are behind sign-in)
- Inputs asking for passwords, card numbers or seed phrases: n/a (Tools are behind sign-in)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)