Skip to content

Free tools Plans FAQ Log in Start free

Free tool

Email health check

Check SPF, DKIM and DMARC for any domain before you send mail.

This is a one-off snapshot. Create an account to keep watching.

LoopOnyx watches domains, DNS, mail authentication, certificates and uptime. The boring, dry stuff done for you.

Small business Agencies Developers Domain investors Personal domain

Try a health check · Domain check · Email check · Privacy · Terms

LoopOnyx is a brand of Tidalux Ltd, registered in England and Wales, company number 17019367.

Testimonial placeholder: customer quote and logo will appear here once we have permission to publish them.