SentriSend
The outbound email firewall to prevent domain bans
Details
- External ID
- 1244022
- Source
- PH
- Company
- —
- Product
- SentriSend
- Website domain
- producthunt.com
- Launched
- Sept. 9, 2026
- Cohort
- —
- Upvotes
- 2
- Upvotes percentile
- 0.7405388069275176
- Tags
- Email, SaaS, Developer Tools
- Fetched at
- Sept. 10, 2026, 5:16 p.m.
- Updated at
- Sept. 10, 2026, 5:16 p.m.
Description
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.
Enrichment
- Theme
- developer infrastructure and monitoring utilities
- Vertical
- Security
- Function
- Compliance & governance
- Audience
- B2B
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- email security to prevent domain bans
- Manually corrected
- False
Could you build this?
No A real-time outbound email firewall claiming zero-knowledge email filtering, collective threat intelligence graphs, and cryptographic SHA-256 validation before upstream ESPs requires high-scale network security and distributed systems expertise.
What it would actually take: The architecture demands high-throughput proxy servers (SMTP/REST proxy in Go or Rust) deployed at edge points with sub-millisecond inspection latency, integrated with low-latency distributed graph databases (e.g., Neo4j or Aerospike) for real-time threat analysis. It requires specialized email deliverability engineers and cybersecurity experts to build zero-knowledge proof verification, spam traps, and automated bounce mitigation without dropping deliverability.
Competitors
Other products that read as similar to this one — 66 launches clear the similarity bar, closest 8 shown.
Attention rank: #18 of 67 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 315 days after the earliest competitor.
- mailysend · github · 2026-09-09 · 27 upvotes · similarity 0.44
- SMTP Tunnel · hn · 2026-01-07 · 140 upvotes · similarity 0.42
- Mailwarm 2.0 · ph · 2026-06-04 · 680 upvotes · similarity 0.42
- InboxJoy · ph · 2026-09-18 · 7 upvotes · similarity 0.42
- fmsg · hn · 2026-04-20 · 5 upvotes · similarity 0.42
- Sendhit · ph · 2026-09-19 · 2 upvotes · similarity 0.40
- Reloop Domain Age & Warmup Checker · ph · 2026-09-29 · 9 upvotes · similarity 0.39
- EmailWarmup · ph · 2026-09-15 · 1 upvotes · similarity 0.39
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a compliance & governance tool for Media & entertainment yet.