There is a subtle but important difference in what they mean by the two. For a search warrant you have to demonstrate "probable cause" - i.e. that the evidence

There is a subtle but important difference in what they mean by the two. For a search warrant you have to demonstrate "probable cause" - i.e. that the evidence you expect to find is in the emails. For a simple court order (which would just be an order to hand over something) they only have to demonstrate suspicion.