Paste an SPF, DKIM or DMARC record and get it broken down in plain English with the common faults flagged. This parses the record text you provide; it does not perform live DNS lookups, so nothing leaves your browser. Retrieve records first with Resolve-DnsName.
To fetch these in PowerShell: Resolve-DnsName -Name contoso.com -Type TXT for SPF, _dmarc.contoso.com for DMARC, and selector1._domainkey.contoso.com for DKIM.