How to forward one email address to several others?
To forward email messages from one email address to several other addresses, you should create email forwarders for each address.
In cPanel you can create email forwarders from the Mail section > Forwarders.
For example, if you wish firstname.lastname@example.org to redirect to both email@example.com and firstname.lastname@example.org, you should add the following forwarders:
email@example.com to firstname.lastname@example.org
email@example.com to firstname.lastname@example.org
Note that you don’t need to create an email account for email@example.com; the forwarders will work even if the mailbox does not exist.
Of course, if you wish to receive mail at firstname.lastname@example.org, you will have to create the account.