Email sending refers to the activity of re-sending an email message delivered to one email address on to a potentially different email address.
There are two sorts of email forwarding. Individual email forwarding and catch-all forwarding.
1. Individual email sending gives you a chance to make an email address that does not have a mailbox, or apply forwarding to an existing mailbox.
2. With catch-all email forwarding, emails will possibly advance if there isn't a current mailbox or forward set up. Catch-all refers to a mailbox on a domain that will 'catch all' of the email addressed to the domain that don't exist in the mail server. Designing a catch-all location can help avoid losing messages because of incorrect spelling.