Security & Trust
Email Deliverability Checker
Audit SPF, DKIM, and DMARC the way mail servers actually read them -- before a spoofed email or a bounced campaign teaches you the hard way.
What it checks
- ✓Parses every SPF mechanism and counts DNS lookups against the RFC 7208 10-lookup ceiling that silently breaks SPF when exceeded
- ✓Reads your DMARC policy, subdomain policy, alignment modes, and report addresses in full
- ✓Probes DKIM selectors and flags weak key sizes or revoked keys
- ✓Groups every finding into critical, warning, and informational issues