xmail-go
SourceEmail-as-a-service backend in Go: manage multiple accounts, send via SMTP, fetch/check via IMAP & POP3, exposed as both a REST API and an MCP server for AI agents, plus a web account dashboard. Single static binary + SQLite (AES-256-GCM credentials), TLS/STARTTLS, ships for Docker (x64/arm64) and Windows tray/service.