Hi,
Do you consider the future possibility to synchronize the To-Do-List @ em Client (including tagged emails to be answered) with Gmail task list?
At the moment I am able to synchronize only regular tasks allocated to Gmail folder, but I can’t do the same with marked emails, etc.
Having that I will be finally able to manage a priority to do list on my mobile devices using widely available to-do tools (Any.Do, ToDoIst, etc.). Please remember that ToDoIst PC version tool provides a plugin for Thunderbird and I am one of many who do not want to switch to this alternative.