I opened a PDF download through Preview and I want to send it to a recipient by email, but the program opens Mail to send it instead of Postbox which is my default email program. Preview>File>Mail Selected PDF This is perhaps a Postbox forum question, but I wanted to see if anyone has a quick answer before heading over there. Is there anyway to have Preview use Postbox instead of Mail? I have looked at all the settings between the there applications. I am running Postbox 2.5.2.