NSA 0 BOUNCE — Email Health Monitoring & Bounce Detection
Self-hosted email bounce detection tool with 3-tier IMAP-based extraction engine. Connects to your SMTP accounts via IMAP, scans for bounced emails, extracts bounced addresses, and classifies them as Hard, Soft, or Unknown. Per-account health scoring, built-in IMAP browser, and automatic feed-back of invalid addresses to NSA MAILER.
Key Features
- 3-Tier Detection Engine: DSN headers, body regex, raw byte scanning
- Bounce Classification: Hard (5.x.x), Soft (4.x.x), Unknown
- Per-account health scoring and delivery rate monitoring
- Built-in IMAP browser for manual email inspection
- Automatic invalid address feed-back to NSA MAILER
- Multi-account IMAP support with connection pooling
Pricing
Monthly: $100/month | Lifetime: $5,000 one-time
FAQ
- What is NSA 0 BOUNCE?
- An email health monitoring and bounce detection tool that connects via IMAP to scan for bounced emails and classify them as Hard, Soft, or Unknown.
- How does the three-tier detection engine work?
- Tier 1 checks DSN headers. Tier 2 parses body with regex. Tier 3 performs raw byte scan bypassing MIME parsing.
- What bounce types are detected?
- Hard bounces (5.x.x — permanent), Soft bounces (4.x.x — temporary), Unknown (detected but no status code).
- Can I feed bounced addresses back to the mailer?
- Yes. Bounced addresses are automatically added to the mailer's invalid recipients list.