Tools
Instruments, not opinions
Two diagnostics for the problems I get asked about most. Both run instantly, show every result, and ask for nothing in return — no signup, no email gate, nothing stored.
Email Deliverability Checker
Enter a domain and see its SPF, DKIM, DMARC and MX configuration — including the SPF lookup limit that breaks authentication without any warning.
- ·SPF record and lookup count
- ·DKIM selector probing
- ·DMARC policy and reporting
- ·MX records
Store Health Check
Enter a URL and see server response time, compression, caching, page builder weight, image formats and on-page SEO basics.
- ·Time to first byte
- ·Compression and caching
- ·Platform and builder detection
- ·Image formats and SEO