Self-hosted apps that integrate with Microsoft 365 / Outlook

3 open-source, self-hostable projects list Microsoft 365 / Outlook as an integration.

• CalnodeSelf-hosted scheduling app replacing Calendly with a single Go binary. Built-in video, recording, AI notetaking, and MCP server for AI agents — all on your infra.
• LanQin EmailLanQin Email is an open-source self-hosted webmail with multi-domain support, DKIM, anti-spam, and single-container Docker deployment.
• pinchySelf-hosted AI agent platform adding enterprise guardrails to OpenClaw — scoped permissions, RBAC, signed audit logs, connectors for Odoo, email, Telegram, local LLMs.