Version:           4.7 (using KDE 4.7.2) 
OS:                Linux

The tabs I create are not remembered when the app is quit an reopened. 



Reproducible: Always

Steps to Reproduce:
Create tabs showing different folders, quit app, restart app. All but one tab are gone.

Actual Results:  
My tabs vanished

Expected Results:  
Same tabs that existed when app was closed

This is an effort to bypass the use of the folder list. My next bug will reflect the inability to hide, or even collapse that list.

Saw this in Mac's recent mail app.  That is just a search and a list, I want folders and since the tabs are so conveniently located.  

In thunderbird I had the view pane right, the list to the left of that, the folder view collapsed to the left of that (just in case). Then tabs to display the folders.