Starbucks said its app suffered a partial outage and mistakenly blasted 'order ready' notifications to customers

• A Starbucks app glitch sent an "order ready" notification to customers' phones.
• Starbucks said the messages were sent in error, and that its app was suffering a partial outage.
• It's not the first time the app has malfunctioned. 

If you got an app notification Wednesday that a Starbucks order you didn't place was ready for pick up, you weren't alone. Starbucks' app malfunctioned and sent the notifications by mistake, the company told Insider. The app also suffered a partial outage.