MCP Mail
Self-hosted MCP connector for Claude.ai that provides multi-account IMAP/SMTP email management via OAuth 2.1 + DCR + PKCE shim and an admin backoffice.
README
MCP Mail · bwb.pt
Self-hosted claude-mail-mcp connector for Claude.ai, with:
- OAuth 2.1 + DCR + PKCE shim (Claude.ai Custom Connector)
- Backoffice at
https://mcp-mail.bwb.pt/adminfor multi-account IMAP/SMTP management - Hardened nginx + systemd on Ubuntu 24.04
Architecture
Claude.ai ──HTTPS/OAuth──▶ nginx (mcp-mail.bwb.pt)
├─ /health → claude-mail-mcp :3220
└─ /* → oauth-shim+admin :3221 ──Bearer──▶ :3220
Local development
cp deploy/env/shim.env.example .env
# adjust STATE_DIR to a local path, SESSION_SECRET, AUTH_TOKEN
npm install
npm run build
npm start
Production deploy
On the VPS (as root), from this repo checkout:
bash deploy/install.sh
Then open https://mcp-mail.bwb.pt/admin, login, change the temporary password, add mailbox accounts.
Claude.ai → Settings → Connectors → Add custom → URL https://mcp-mail.bwb.pt/mcp.
Ops
See docs/OPERATIONS.md and docs/ROADMAP.md.
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