It's funny how difficult it is to get email into Google or Microsoft, when, as an email admin, I want to block @gmail.com and @outlook.com because 90% of email from those domains is spam.
I had a family member work at a company that blocked gmail. They were a lotus notes shop tied with MS AD, and their admin was very anti-google. "Gmail is a cesspit of spam" or something like that. But... then was all in on MS. "MS is great - they have no spam problems". Which is just... wrong.
So... I couldn't email my family member at their work from my gmail. Not a big deal for me, but I know it impacted their ability to work with some clients and providers. And then... sure enough, they were getting spam from MS-hosted stuff (outlook.com, azure hosted stuff, etc).
He might have thought he was getting one over on google or something like that - I'm sure they didn't give a toss about it.
