I use a strategy of sending myself email messages as reminders
of important tasks — each message includes specific
characters in the subject line (e.g.. ###). I then set up a rule to
colour the message when it is received, so it stands out in the
list of messages in my inbox.
I could use flags, but that would mean I have to access another
(smart) mailbox to see it — I'm no good at monitoring my 'to
do' lists — I work best by seeing reminders of what I have to
do — so I need to see the important messages every time I
look at my InBox.
The problem is that my important messages move down the screen
as mail is received.
I would love to have an option to make a message 'stick' at the
top of the list of messages in my InBox (or at another designated
place, such as after all messages received 'today', or 'after all
messages that are 3 days old') — somewhat like messages can
be made to stick at the top of a Bulletin Board.