That’s your opinion. I am with OP on this one. Why proofpoint gets to silently drop the email instead of letting it go to spam folder. If you have vested interest in proofpoint you should disclose it or keep sucking for big guys.
I have no vested interest in a nything related to this thread. Just a vested interest in horse sense.
I read the OP’s description of what they send to customers inboxes and it is exactly the sort of email I mark as spam. In a corporate environment, it is exactly what I would expect a paid spam filter to filter.
FWIW I agree with you 100%, but unfortunately that ship sailed long ago with the horse and barn doors bolted to it, when everyone migrated to Gmail + O365.