23,520 servers. Updated 2026-09-24 08:44

"Relay" matching MCP connectors:

Agent Email List — Free SMTP Relay for AI Agents A
com.agentemaillist.ai
Free transactional email + SMTP relay. Agents self-signup, no API key needed to start.
Email Communication
811
ARC-Relay A
com.arc-relay
DMARC-safe email forwarding for agents: aliases, DNS health checks, and MCP tools on your domains.
Email Networking & Infrastructure Security
61