Forgot your Starbucks account username? Forgot Username Please enter the email address you used to sign up for your Starbucks account. We'll send your username to that email address. Email * Not sure if you have a username ? If you created your Starbucks account after October 2012 using the iOS app, or after January 2013 using the web site, log in with your email address. For older accounts, log in with your username. Can't access email at this address?