The Platinum Delta SkyMiles Business Credit Card provides 2X miles per dollar for purchases directly from Delta, in addition to the minimum of 5X miles you’ll earn for being a Delta member.
You can also earn quite a few bonus miles through the intro offer. That includes 35,000 bonus miles and 5,000 MQMs for spending $1,000 in the first 3 months, and a $100 statement credit for making a Delta purchase in first 3 months.
There’s a $195 annual fee for this card (Rates & Fees). But you’ll get valuable airline benefits like priority boarding, free first checked bags, a free companion pass every year after your cardmember anniversary, and a 20% discount for in-flight purchases. And it also comes with Amex OPEN business benefits. That includes free employee cards, business-trained customer support reps, and account management features.