Potential

Requires ALOT of polishing.

UI is clunky, slow, freezes often, cannot delete mail accounts, only uses Dropbox attachments, in app browser does not close or go back, app looks fuzzy on my 6+, email setup is lengthy.

Needs a cleaner and more professional look.

Love all the uses of swipe gestures within app. Makes using it very easy and do not have to stretch to edge of screen.

a2tjer about Envelope - Unified Inbox Email