It would be good, very good, that if I have several email accounts: Account 1, Account 2, Account 3, etc.
If, for example, in Account 1, I add an email address to "Blocked Senders", Outlook also gives me the option of adding that email address to the "Blocked Senders" in the others accounts.
The same for the "Safe Post."
Brett W. commented
For the mobile app