I’m turning what was originally a question, into a product request so it can be voted on:
I also want to call out
The issue, essentially, is GS customers share sending IPs with other GS customers (as I understand) so if someone in my IP cohort isn’t good with using operational emails that can cause problems with my contacts. There’s no visibility into this or any real way for admins to do anything if they now have “bad contacts”. Email validator is a clunky and not particularly robust or effective solution.