That timeline was exactly my experience with Apple here - https://www.grepular.com/Apples_Protect_Mail_Activity_Doesnt...
They don't seem to know or care what is going on with their own email systems.
Has anyone seen Protect Mail Activity get re-enabled after you've disabled it? I wrote about that a few days ago: https://lapcatsoftware.com/articles/2026/6/6.html
Has anyone seen Protect Mail Activity get re-enabled after you've disabled it? I wrote about that a few days ago: https://lapcatsoftware.com/articles/2026/6/6.html