Yes of course - this is why I mentioned that authenticating the domain is the main win. Now - setting up SPF, DMARC, ... is technically easy but not so much or

Yes of course - this is why I mentioned that authenticating the domain is the main win. Now - setting up SPF, DMARC, ... is technically easy but not so much organizationally. This is a real pain in the ass to find what various organizations used in the past in their outsourced communication (marketing, pay system, travel, ...). The advantage that Outlook had (and has) is that it will resolve the user information from Active Directory. Receiving an email in Microsoft from "Bill Gates <helloworld@kjshkjsdhfkj.com>" will yield a very unusual visual (not the right firstname/lastname sequence, no picture, ...).