بررسی‌های دامنه

Read any domain's DMARC record from public DNS, as the DMARC checker on the OpenEmail website does: how strict it is (missing, invalid, monitor for p=none, quarantine or reject), every tag, the parent domain it inherits from, and what is wrong with it.

Read any domain's BIMI record, fetch the logo it names and check the DMARC policy beside it, as the BIMI checker on the OpenEmail website does. Inboxes draw a logo only at p=quarantine or p=reject, and the issues say what stops it showing.

Check whether mail from any domain is set up to be trusted, as the deliverability checker on the OpenEmail website does: MX, SPF, DKIM, DMARC and BIMI, each pass, warn, fail or absent with a verdict, weighed into a score out of 100 and a grade from A to F.