Email Aliasing
One practical use of email aliasing is to create an alternate, easy-to-remember address for a long or awkward email account. This is similar to the practice of using words or phrases in place of telephone numbers. For example, a customer might have trouble remembering a phone number such as 1-800-932-1212 but have little difficulty remembering 1-800-WEATHER. Likewise, if you have an awkward address such as “11243.332@somedomain.com,” you may wish to provide an alias such as “fred@yourdomain.com” that is easier to recall and points to the same destination.
Also, aliases can be used to give your organization a larger, corporate appearance. Instead of telling people to direct their questions regarding sales, support, employment, and general information all to the same address, you can create aliases at “sales@yourdomain.com,” “support@yourdomain.com,” “jobs@yourdomain.com,” and “info@yourdomain.com,” all of which can be redirected to a single address. One must remember that a alias is not a user and has no ability to send mail on its own. This is another way to hide your true mail user name from mail harvesting software.