Free email deliverability and security checks by [Postbox Consultancy Services](https://postboxservices.com/) - live DNS, real blacklist queries and actual SMTP analysis instead of guesses from training data. **8 tools:** email blacklist check (24 DNSBLs incl. Spamhaus ZEN, Barracuda, SpamCop), spoofing/BEC exposure grade (A-F), URL redirect chain tracer with phishing flags, two-step email spam test (disposable address -> /10 score), raw .eml analysis, domain age, WHOIS. Open access, no accoun
Cross-referenced across 55 tracked directories
#53552
Popularity Rank
1 / 55
Listed In
Emerging
Adoption Stage
10/27/2026
First Seen
Recently added to the ecosystem
Score: 100/100
0 dependency vulnerabilities found
59b9f352-8cdc-44d3-9dd9-db3bfa521880
No description available
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