How will my business email address work with my current email?
When you create a new business email address powered by G Suite, your new business email is added to your existing Gmail account as an additional address from which you can send and receive emails. All of your existing emails and contacts stay intact.
You continue to receive emails sent to your original Gmail address, along with any emails sent to your new business address.
To start using your new business email, just sign in with your existing Gmail address and password, or your new business email and existing Gmail password. When you compose emails, you can choose to send from whichever email address you prefer—your new business address or your original Gmail address.