Gmail: Send mail from a different address or alias

Gmail lets you send messages with another of your email addresses listed as the sender instead of your Gmail address. This feature helps you manage multiple accounts from the Gmail interface; it works only if you already own the email account linked to the alternate address. To send mail from a different Gmail username, you’ll first need to sign up for that address. Select an option below for instructions on how to add your other addresses to your Gmail account.

More information click the following URL link:
https://support.google.com/mail/answer/22370?hl=en&ctx=mail