Step 1:From the Menu icon, choose the Settings option followed by the Manage Account option to turn on sync.
Step 2:Select your email account and then tap the Sync Settings option.
Step 3:Highlight the box near the Sync Email option and navigate to the Sync Schedule screen.
Step 4:Modify the necessary settings in the next step, and your email will start syncing automatically each time you enable the data access while you turn on sync.