how can i receive emails coming in my webmail(roundcube) into my admin panel?

what i really wanna ask is that i'm using codeigniter library to send emails. and it is working good. now i want to receive reply emails. means if someone replies to the email that i sent from my admin panel(that i built in codeigniter). is there a way to show emails coming to that specific email address that i'm using to send emails, in my admin panel. any help would be appreciated.