@arizeai/phoenix-mcp

# Phoenix SMTP Development Server A simple SMTP server for visualizing and debugging emails emitted from Phoenix during development. **Not for production use.** ## What It Does - Catches emails sent by Phoenix during development - Provides a web UI to view email content (HTML, text, headers) - Stores emails in memory for easy debugging - No actual email delivery - just visualization ## Quick Start The SMTP server runs automatically with the Phoenix development environment: ```bash # Start Phoenix dev environment (includes SMTP server) tox r -e docker_devops # View emails at: # http://localhost:18273/mail ``` ## How to Use 1. **Start the dev environment** - SMTP server starts automatically 2. **Trigger emails in Phoenix** - use your app's email functionality 3. **View emails** - go to http://localhost:18273/mail 4. **Debug email content** - see exactly what Phoenix sent ## Email Viewing - **HTML view**: See rendered emails - **Text view**: Plain text content - **Raw view**: Full email data as JSON - **Headers view**: SMTP headers and metadata ## Configuration The server uses these defaults (configured in Phoenix dev environment): - **SMTP Port**: 1025 (where Phoenix sends emails) - **Web Port**: 8025 (served via Traefik at `/mail`) - **Storage**: In-memory (emails reset on restart) - **Max Emails**: 1000 (oldest emails auto-deleted) ## Troubleshooting **No emails showing?** - Check Phoenix is configured to send emails to `localhost:1025` - Verify the dev environment is running - Check browser console for errors **Can't access web UI?** - Ensure you're using http://localhost:18273/mail (not port 8025 directly) - Confirm Traefik is routing properly in dev environment That's it! This is intentionally a simple tool focused on email debugging during Phoenix development.