Email forwarding is critical when managing lots of domain names, or different extensions of the same domain name.
Catch-All Email Forwarding services will take any email address at your new domain name (eg: name@domain.com) and forward it to a mailbox of your choice (eg: name@otherdomain.com).
The email management of your new domain is so simple and cost effective when using catch-all email forwarding as you will no longer need to setup multiple mailboxes for each domain name at an additional cost.