I’m coming from PostBox. I’m discovering features in eM client I’m finding handy. I have a couple of posts marked “Found a feature”. These may be documented but I found these because I had a need. I started using comments to write myself reminders, using eM client “Notes”, of whether I had and how I had dealt with an issue. However, I couldn’t locate the messages to which I had attached notes. I discovered in the menu > View > Columns and added “Notes” to the “show these columns” list. So now in the message list, there is an icon for Note on the messages or conversations on which I’ve added notes. Nice.
Next I’'ll see if I can change the color of the icons in Themes.