Show HN: E2a – Open-source Email gateway for AI agents

Category: infrastructure

Tags: email-gateway, ai-agents, authentication

Score: 6.5/10 (Innovation: 6, Technical: 7, Documentation: 7, Utility: 6)

E2a is an open-source email gateway designed for AI agents, providing authenticated email transport with SPF/DKIM verification and HMAC-signed delivery via webhook or WebSocket. It offers a unique human-in-the-loop approval mechanism for outbound emails, making it interesting for secure agent-to-human communication.

Target audience: backend devs, ai engineers, devops

Repository: https://github.com/Mnexa-AI/e2a · Go · Apache-2.0

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