A domain’s email setup.
Check the public records.

Start with your mail provider’s account help

This tool cannot inspect your account, messages or whether a particular message will arrive. This applies to every provider, including a custom work address.

• Missing a message? Check spam, trash, filters and account storage in your mail app. Ask the sender whether they received a delivery-failure notice.
• Cannot sign in? Open your provider’s own app or help site and use its sign-in or account-recovery steps.
• For a work mailbox, give your administrator or provider the sender, recipient and approximate time so they can trace the message. A delivery-failure notice can help them identify the cause.

This mailbox-help route makes no DNS queries. If you intentionally want to inspect public domain records, choose the second option above.

This inspects public records for a domain you choose; it does not establish that you control it or that a mailbox works. Use your mail provider’s domain setup instructions to compare results. Changing records requires access through the domain’s DNS administrator. You can inspect public DNS without that access.

On check, these DNS names are sent to Cloudflare 1.1.1.1, the only resolver used. Cloudflare can see the queries. Only the language preference is saved by this app.