Email Security
Check SMTP STARTTLS, protocol, cipher, and OpenSSL verification output.
Checks whether an SMTP server supports STARTTLS, including protocol, cipher, and certificate verification. The output is organized for quick review, copying, and cross-checking with nearby tools in the Email Security group.
Email security tools combine DNS records, authentication headers, and transport-related signals to explain delivery behavior. They are designed to support SPF, DKIM, DMARC, TLS, blacklist, and header troubleshooting without hiding the technical values.
Open nearby tools in the same group to cross-check, inspect deeper, or complete a small workflow.
Open Email Security hubChecks whether an SMTP server supports STARTTLS, including protocol, cipher, and certificate verification. Use it when you need a quick, readable result before cross-checking with production data or related tools in the Email Security group.
Yes. Treat the output as an operational aid: review the source input, compare it with authoritative systems, and test changes in the correct environment before rollout.
