Email Tester
Send a real test email to a temporary address from whatever system you’re testing, and see what we can tell about how it was sent.
Create a temporary test address, send a real email to it from whatever system you’re testing, and get a plain-language report on what we can see about how it was sent.
This reads whatever the receiving mail server actually reports — it can’t show SPF/DKIM/DMARC results a real inbound provider didn’t supply. See Developers for this deployment’s current email-receiving setup.