Open the app then tap the menu button (three horizontal lines, top left), then choose Settings. Messages from the Google account you used to set up the phone appear by default, but you can add other email accounts too, whether they’re with Gmail or not. Gmail is the default email app for Android, which is convenient because it does a stellar job pulling together emails from various accounts.
Syncing emails on Android Adding accounts in the Gmail app for Android. Here’s how to go about it, whether you prefer using your smartphone or your computer. Instead of flicking between different apps and devices, get your accounts to pipe emails into one place ready for reading and sorting. If you want to spend as little time as possible checking email, siphon messages from all your accounts into one dashboard.