After posting this on HackerNews some developers / users feel my hypothesis is wrong and one can not repeat the steps below without having physical access to an user’s phone or locked devices. I agree to this. I also need to check for on which iOS version this is secure. Because as per as I remember, this is definitely doable in earlier version of iOS. But the original problem still remains same. These files are unencrypted and unprotected and one can copy your entire mail contents if he/she has access to your phone.
read more.......http://subhb.org/2013/04/24/mailbox-ios-app-is-a-security-fail/
read more.......http://subhb.org/2013/04/24/mailbox-ios-app-is-a-security-fail/