There is no category "all" in the dialog which follows the "To" button. I had to give categories to my contacts first before I could use them in that dialog.
-- Can't use the "To" button in Compose Message to look up contacts https://launchpad.net/bugs/47329 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs