SentriSend is a Zero-Knowledge outbound email firewall that protects domain reputation from bounce spikes and suspensions. Sitting in front of providers like Resend, SendGrid, or AWS SES, it uses a Collective Threat Graph to block credential attacks in real time and generates immutable SHA-256 cryptographic compliance proofs to Supabase for GDPR and SOC 2 audits. Features an official Node.js SDK and native English, Japanese, and Korean hubs.
