The method at with @MattAuSupport's comments since is so reliable and easy, why not then using a GUI button to backup? most functions have menu and buttons so this seems a reasonable wish from users who are not comfortable using explorer with hidden ...
Nevertheless a button making the @MattAuSupport actions would be a GUI better approach. Most features at Thunderbird have a menu option or a button, and since it is so simple to do it by command line, why not also a button for that? there are people ...
