Starbucks is rolling out iMessage gift cards in April. Last-minute birthday presents are about to be as easy as sending a "happy birthday!" ...

For Starbucks fans, getting a free drink on your birthday is already a sweet deal. But here's how to get the most out of your annual complimentary beverage.

Starbucks also allows you to redeem a tasty treat for your birthday reward. Just remember that you can't get both — so choose wisely! To do this, you must be signed up as a Starbucks Rewards member.