Free tools for better email.

Fix what stops your email arriving. No sign-up, and what you enter stays in your browser, except where a tool has to look up your public DNS.

Check any domain’s SPF, DKIM and DMARC, and see exactly what to fix.

Tick where your email is sent from and get the record to add.

Choose a policy and a reports address, and get the record.

Paste a bounce and read what the code means and what to do.

See the route a message took, where it waited, and whether it passed.

Check whether an address is worth sending to: typos, throwaway inboxes and dead domains.