I support this request.If it is difficult to allow people to customise the buttons, at the very least, give people half a dozen default icons that they can assign to each mail account. People will quickly learn which is which.
This is essential functionality for me, s well.I file all my emails in a tree structure on one specific email account. It is the main benefit of Thunderbird for me and I use this functionality on the desktop client extensively.
Can I add my vote to this.Because I have lots of folders, Thunderbird (for Android) is not a viable client without being able to collapse and expand hierarchical folder structure.
