The app temporarily stores and indexes user data (including email, attachments, calendar information, and contacts), along with login credentials, on Amazon Web Services servers located in the United States. The cloud service then connects to your mailbox on your behalf, accesses your email for the purposes of indexing and sorting, and then the mobile app downloads the messages from that cloud service. This poised a serious security flaw.  

Do you agree with the above or what is your view on how the app deal with our email?

Let us know your views in the comment.