SentriSend
The outbound email firewall to prevent domain bans
2 followers
The outbound email firewall to prevent domain bans
2 followers
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.
Hi Product Hunt, I'm Steve, founder of Bench Tech Audio Ltd (UK).
SentriSend is an email validation API for signup and sending flows. Bad addresses (disposable domains, or domains that don't exist or can't receive mail ) push up bounce rates, and providers like AWS SES review accounts when rates get high.
SentriSend checks each address before you send: syntax, a bundled list of about 133,000 disposable domains, and live DNS/MX lookups. If the DNS result is inconclusive it allows the address, so a slow lookup doesn't block a real user.
It doesn't confirm that a mailbox exists, and it doesn't detect bots.
Free tier: 100 requests a month, no card needed. Docs and a working example: github.com/sentrisend/SentriSend
I'd love your feedback, especially on the disposable-domain rules.