Email alias for email client

Is it possible to create an option to configure/use a forwarder email as the replying alias in an email client?  For example, our nonprofit uses postion@domain.com as the mailbox, but to look more professional we create the forwarder with the users first initial and last name (jdoe@domain.com). We do this because sometimes, our volunteers come and go a little quicker than we would expect or hope, but would like the next volunteer to pickup where they left off if necessary.  When configuring the email account in an email client you cannot configure it with the jdoe@domain account because it will not connect.  Is there a way to allow our selected users to reply using the jdoe account as they are able to receive with it, mean while having the emails go to the box intended for the specific position?  Thank you all in advance for the help.