sandeep-ab83

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