Switch on an outside light. This helps drivers find the house (landmarks and descriptions are helpful, too) and keeps them from stumbling up the sidewalk.
Be ready to pay. A delivery person appreciates it when the customer has the money in hand, says Barry Jessen, a Kaysville, Utah, Domino's manager who was a longtime deliveryman. When you say, "Let me get my wallet," and disappear for seven minutes, that's time in which the driver isn't making another delivery―and picking up a tip.
Show concern for their safety. Remain at the door with the light on until the delivery person has driven off.
Be home when they arrive. Customers will estimate that they have enough time to, say, run to the store after they place an order―leaving the deliverer waiting on the doorstep. Stay within earshot of the doorbell.