Just a quickie from Álvaro Ramírez. If you’re a Mu4e user and would like to have an email’s status shown as one or more icons instead of a series of comparatively opaque letters but don’t want to deal with all-the-icons, Ramírez has the answer for you.
It’s pretty simple. You choose the icons you want for each status indication—or simply copy Ramírez’s—and add a series of configuration items to your init.el. Those items are listed in Ramírez’s post so take a look if your interested in adding your own.