Not having to switch to receive the mail of all the accounts

Not having to switch to receive the mail of all the accounts

Hi, 
I would like to open different accounts all with the same domain name (one with info@domainname.com, the other with shop@domainname.com, etc...), and I would like to be able to receive all those emails and reply to them without having to switch from one account to the other.
Is this possible?

Thanks
Federica