There are times when specific emails need to be remembered or highlighted in a folder. There are clear and easy workarounds to highlight emails, but what would really benefit is if we can mark specific emails as "Stickies" in that folder which would float up the emails on top of the message list in a folder:
Sticky Mail 1
Stickly Mail 2
Normal mail in normal folder ordering mechanism
I realise that this could cause problems with GTK and mess with the folder sorting. So a possible workaround is that the plugin creates a secondary message list on top of the message list and it simply copy-displays the "sticky" messages on top of the normal message list.
You can mark mails (Message->Mark->Mark) and sort by Mark (View->Sort->By mark).
Indeed Mr. Glauser, as I too pointed out when I said, "There are clear and easy workarounds to highlight emails". However these methods do not "float" up a seemingly permanent visual reminder of these certain mails while letting a user perform normally on a folder. For example, by doing what you described, I lose my normal sorting order of the folder, and if I have many messages, it is rather easy to scroll those marked messages away from view and immediate visual focus.
Imagine, if you will, the difference of having an important note on a post-it note pasted on your monitor screen edge versus having one in a text file on your desktop.
Then, it would be perhaps easier and more consistent to introduce a enhanced sorting algorithm, allowing to sort over multiple keys? (First sort by Mark, second sort by Whatever) By this avoiding to implement yet another mark/highlight/colorize tag.
Marius, not really. Sorting on multiple keys is "additive" by nature. So when you sort by one key, the other key acts within grouping/sorting done by the first key. Plus it can lead to a lot of confusion generally. Plus, the real need is to have a permanent, anchored message that does not scroll out of view. No amount of filtering and quicksearching or sorting addresses that.