hi. i searched the heck out of this all day and can't seem to find an actual answer. i use gmail and all i want to do is have email for offline support so i can read them when i'm underground or on an airplane. it doesn't matter if i use the gmail app or mail native app but can't figure how to store emails offline. i tried setting up an exchange gmail account on my iPhone but i don't exchange works anymore for free gmail accounts. any tips?