If you use iPhone, you can use iOS Mail app (and with iCloud mail) if you really care.
Apple dark UX pattern is that there always has badges on Settings app if you do not subscribe to iCloud even if you have manual backup. You cannot dismiss it.
Much worse:
CVE-2026-20682
Apple Notes Note Deletion Logic Flaw (An attacker may be able to discover a user’s deleted notes.)
Many has not upgraded to iOS 26.3 yet.