Gmail – Is it possible to have email alias in Gmail

I use the following setup:

Under Settings -> Forwarding and POP/IMAP, you can forward email from one account to another.

Under Accounts and Import, you can add additional email addresses using "send mail from another address." Select "Reply from the same address the message was sent to" to have Gmail pick the correct address automatically when you reply.

With this configuration, you will receive emails addressed to both accounts and can send from both accounts.

See additionalemail@gmail.com is an alias for realemail@gmail.com, which implies that addtionalemail@gmail.com is something like: real.e.mail@gmail.com re.alemail@gmail.com or realemail+anything@gmail.com

This is not a separate GMail account and so you cannot receive separate emails for this. You do not have a separate inbox for this. You can create a filter so that the emails sent to the additionalemail go to a particular label.

You can try creating accounts on different sites using additionalemail, you try to subscribe to something using this additional email.

If you go to GMail>Settings>Accounts and Imports you can add additionalemail under the Send Mail as and send e-mails as additionalemail (but the complete header of the sent email would reveal your realemail@gmail.com).