Email notifications of ALL login attempts
Emailed notifications of all login attempts, successful or not.
When available, these notifications should go to a separate notifications email rather than dropped in the protonmail inbox.
If "advanced logging" is enabled, it should also add the IP address of the login attempt.
(Otherwise someone breaking into a protonmail account would see that appear in the protonmail inbox, and naturally would be able to delete the notification mail before the rightful owner can log back in.)