Let’s say I have the following subdomain registered for the SAP:
This subdomain will have both SPF and DKIM authentication methods.
What happens if I add a new email address in SFMC (From Address Management) that I would occasionally use to send emails from SFMC? The domain (specifically a top-level domain - TLD) of the additional verified email address, however, will be different, for example:
Will this additional verified email address use the same SPF and DKIM as the authenticated domain used for the SAP - email.domainxyz.com? What might be potential impacts on the deliverability using a non-SAP domain?