Show HN: Mailrelay – Emails to Webhook in Minutes

Category: devtools

Tags: smtp, webhooks, email, self-hosted, go

Score: 6.8/10 (Innovation: 6, Technical: 7, Documentation: 8, Utility: 6)

Mailrelay is a self-hosted SMTP server that parses incoming email, matches rules, and forwards them to webhooks with retries and a web UI. It fills a practical gap for integrating email-only services (bank alerts, receipts, monitoring) into HTTP-based workflows, and includes SPF/DKIM/DMARC verification, template payloads, and OIDC auth.

Target audience: backend devs, devops, homelab enthusiasts

Repository: https://github.com/gowthamgts/mailrelay · Go · MIT

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