Postmates, a food and grocery delivery app, said rapper Post Malone is its No. 1 customer. He's apparently spent more than $40,000 on the app just in the past year ? with more than 660 orders in 52 different cities. His go-to restaurant is Popeyes, and Postmates says he spent $8,000 on 10,000 Popeyes biscuits for a Coachella party. Here's a list of items Post had delivered for a party earlier this year, according to Postmates: 3 packs of rolling papers 6 bottles of orange juice 2 bottles of cranberry cocktail juice 4 bottles of cabernet sauvignon 2 bags of ice 2 handles of Tito's Vodka 40 solo cups.