H hallux Q&A Team Jul 7, 2013 12,322 7 38 Visit site Jan 24, 2016 #2 In the Gmail app (you don't specify what app you're asking about), go to the hamburger menu (top left) tap settings then tap the account you want to modify. In there is an entry for how many days will sync.
In the Gmail app (you don't specify what app you're asking about), go to the hamburger menu (top left) tap settings then tap the account you want to modify. In there is an entry for how many days will sync.