Today only, Mar 29, 2018, from 3pm local time, Starbucks is offering its Rewards members 50% off Any Espresso Beverage for a limited time. If you are not a Rewards Member, it’s Free to join. Discount is Limit one per person. You can apply the discount in-app for a mobile order or tell your barista you’d like to redeem this offer for an in-store purchase. [Starbucks locator]