Can the Starbucks for Outlook add-in be used with Outlook Web Access or Outlook.com?
Yes, Starbucks for Outlook can be used with Outlook.com and Outlook Web Access. The add-in supports the below browsers.
On Windows 7 and later, the add-in supports the latest version of Edge, IE, Chrome, and Firefox browsers.
On Mac OS X, the add-in supports the latest version of Chrome, Firefox, and Safari browsers.