Starbucks Rewards members! Check your emails for a possible offer valid for a FREE Handcrafted Beverage with ANY Food or Beverage Purchase when you pay using your Starbucks Card or App! The email is titled ''Tomorrow's order: free handcrafted drink''. Your coupon valid for a free beverage will automatically be loaded to your account within 24 hours after your purchase. This freebie is valid through September 3rd.