Forwarders allow you to send a copy of all Mail from one Email address to another. For example, if you have two different email accounts, firstname.lastname@example.org and email@example.com, you could forward firstname.lastname@example.org to email@example.com so that you do not need to check both accounts. Note that the forwarded mail will still be delivered to the original address as well.
Steps to add the Email accounts forwarder:
3. Click on the Add a New Forwarders section which has shown as below
4. New window will popup where you need to enter Address to Forward and destination
Forward All Email for a domain
In addition to forwarding individual mail accounts, you can forward all email from one domain to another
By this way you can forward the email from one domain to other.