Shops delivery?

How does the shop delivers the items you bought?

By using a mule account in game?

Sounds a stupid question, i know but i saw one shop which was talking about "account info" in his FAQ and it seems fishy.

Most stores will email you the account details of a pre-made mule containing your purchased items, some offer an online chat service where they arrange to meet you in game.

I've also used one that asked for the login details of your own mule and they do a swap with your mule on their own time. Others just meet you in-game.

I use ROTMGVault (Extremely overpriced but somewhat quick). When you sign up, they ask you to list your mules so they may enter it and deliver it to you like that.