How to Close a Message Window on Delete Instead of Loading the Next Message
By default, Postbox will load the next message on delete when in a stand alone message window. To change this behavior to close the window on delete:
- Open Config Editor.
- Enter mail.close_message_window.on_delete pref into the textbox.
- Double-click the entry for mail.close_message_window.on_delete pref
- Change the value from false to true.