Use Avatar as encryption/confidenc indicator
Open, NormalPublic

Description

Emplems and such / colored ring.
If something seems fishy -> switch avatar for someting else.

If we "know" person (=validly singed mail form someone in our addressbook) just display the name / otherwise display the email address

Would starred, flagged etc be able to be included?

Suggestion/Mockup for avatar as indicator
Mockup

Border requested for avatar (the shading) as SVG with four border types using a 1 px thin line (48x48 icons)
https://share.kde.org/index.php/s/8v34Ky3Cs6p5ogU