A mail forward
A mail forward doesn't have its own password or mailbox; rather, a mail forward redirects (forwards) mail to a specified mailbox.
For example, you might use the aliases bob@my-business.com and owner@my-business.com to direct mail to the primary mailbox, robert@my-business.com.
Forwarding an email
You can send email from one password-protected mailbox to another. For example, you might forward an email you received at robert@my-business.com to another email address that is jane@my-business.com.
You can forward emails one by one or automatically forward all email you receive.
Learn how to manually forward an email.