There should be something which bridges the (very dynamic) QAbstractItemModel with a QMenu so that e.g. the mailbox hierarchy can be properly shown in pop up menus. The starting point could be the code at https://qt.gitorious.org/qt/qtwebkit-examples-and-demos/blobs/stable/examples/webkitwidgets/browser/modelmenu.cpp, but it will need to be expanded with support for the funny dynamic signals emitted by the QAIM. https://projects.flaska.net/issues/637
Thank you for the bug report. As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists. If this bug is no longer persisting or relevant please change the status to resolved.
Trojitá is no longer maintained, please switch to a maintained alternative like https://apps.kde.org/kmail2/ Sorry for the inconveniences.