This was the last straw for me. I'm migrating to Apple Mail and cancelling workspace ASAP.
ETA: I said nothing about where I'm planning to host my SMTP server. Apple Mail is a provider-agnostic client-side application, like Thunderbird.
ETA2: Those who read TFA carefully will know that, even though this doesn't affect Workspace aliases, it does affect this feature (Send-As SMTP) for workspace accounts.
Before you do that: Consider a more open and transparent email platform such as Proton, Fastmail, Runbox, Tuta, basically just reconsider moving from one evil, unaccountable platform to another. As you may find the evil, unaccountable platform may do evil and unaccountable things.
With workspace you can add your own custom domains anyway... This seems unrelated.
> This change does not affect Google Workspace aliases or other Gmail addresses you own.
So you got burned by a centralized proprietary mail service suddenly making user-hostile changes, and your first instinct is to move to another centralized proprietary mail service by a company with a long history of user hostile changes?
Truly modern consumer sensibilities are fascinating to me.
Personally I do not use any Apple or Google products. There are so many better choices!
Anyway, might I suggest services that run standard open source mail daemons that never restrict you, like Migadu.