Free tool

Email Setup Check

Enter your business domain and we'll look at the settings that decide whether your email reaches people or lands in spam: where your mail goes, who is allowed to send as you, and whether your messages are signed.

I know my DKIM selector
Find my selector from an email

Send an email from your business address to yourself, open it, and copy its full headers:

  • Gmail: open the message, choose the three dots (⋮), then Show original, then copy all of it.
  • Outlook: in Outlook on the web, open the message, choose the three dots, then View, then View message source. In the desktop app, open the message, choose File, then Properties, and copy the Internet headers.

This is read in your browser only. We never send what you paste anywhere, and we don't keep it.

Lookups use public DNS (Cloudflare). We don't store what you check unless you ask us for help.