Hi!
As requested by many users, it is essential for us to be able to mark our messages as unread. These unread messages should be moved to the top of the list, and highlighted.
In addition, a repetitive reminder such as "Remind me later" should be available so that we do not forget to deal with our important messages, as in the Outlook calendar.

Finally, we should be able to mark the messages as "Important" and be able to filter the list according to this criterion.

Regards.