*** EASIEST UNZIP TOOL FOR IOS ***
We can unzip "*.zip" files from Mail app on the iOS, its really easy: (as screenshots)
1. Long press attachment cell to open in "Unzip" in Mail app.
2. Manage files via iTunes.
*** IF YOU CANNOT SEE THE POPOVER MENU IN MAIL APP, PLEASE DELETE AND REINSTALL OUR UNZIP APP, WE BELIEVE THIS IS AN IOS BUG ***