Apple notes in the fine print of the deal that the offer is only applicable to new customers who have not previously made an order on Postmates. Otherwise, you can place your first order, use Apple Pay to check out, and wave the delivery fee. No promo code is required.
The summer-themed e-mail promotion also highlights other stores where Apple Pay is accepted, like Whole Foods, Gap, and Crate and Barrel, where Apple says you can "find all you'll need to entertain" for summertime parties. In apps, the company encourages you to pay using Apple Pay in Overstock, Jet, and Kohl's.
Apple previously partnered with Postmates in one of these promotions during the holidays last year, offering free deliveries on all orders over $20 if you used Apple Pay to sign up for Postmates Unlimited. More recently, the company has promoted Hayneedle, 1-800-Flowers, and Instacart.