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Rheopyrin/ox-mcp

by Various

MCP server for Open-Xchange & standards-based mail: email (IMAP/SMTP), Sieve filters, CalDAV calendar, CardDAV contacts, free/busy.

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MCP

Rheopyrin/ox-mcp

Added 3 Sept 2026

#ai-agents#caldav#calendar#carddav#claude#contacts#email#free-busy
Catalogue record, not a reviewed recommendation. This record can include automatically collected descriptions and setup details. Confirm important claims with the original source. Explore source-reviewed tools.

Overview

MCP server that connects AI models to Open-Xchange and standards-based mail systems. Provides access to email via IMAP/SMTP, Sieve filters, CalDAV calendar, CardDAV contacts, and free/busy information.

Best for

Best for
Builders adding AI access to Open-Xchange or standards-compliant email and personal information management stacks.

Use cases

  • Connect an AI assistant to an email inbox
  • Manage calendar events and contacts through CalDAV and CardDAV
  • Automate Sieve filter or free/busy lookups

How to use

Install

npx -y @rheopyrin/ox-mcp

Tools exposed

  • email_search
  • email_mark_spam
  • email_reply
  • OX_MCP_TIMEOUT_SECONDS
  • oauth2-refresh
  • oauth2-password

Clients listed in this record (not verified here)

Claude Desktop, Claude Code

Notes

0 stars on GitHub. Last updated 2026-07-19. Licensed MIT.

Pros

  • Uses open standards like IMAP, SMTP, CalDAV, and CardDAV
  • Covers email, calendar, contacts, and filters in one server
  • Written in TypeScript for Node.js ecosystems

Cons

  • No stars suggests an early-stage or unproven project
  • Vendor listed as Various, so long-term support is uncertain
  • Setup may require familiarity with MCP and multiple server protocols

Pairs with

Other entries in the index that connect to this one. Click through to see the chain.

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