Setting up Gmail on your iOS device is simple! If you already have a personal Gmail account on your device, don’t worry. Gmail for iOS can handle up to 5 accounts logged in at once!
If you haven’t used the Gmail app:
Step 2: Sign into your Google Cloud account to start receiving email.
If you already use the Gmail app:
Step 1: Go to your Gmail app
Step 2: Go to the Inbox screen either by swiping to the right or by tapping the list button in the upper left corner
Step 3: Tap the downward pointing arrow at the top of the screen, then tap “Add Account”
Step 4: Enter the additional Gmail account information and choose “Sign In”