Choose Aliases from the Options menu in the main window, from the Format menu in a Compose window, or from the To or Cc button menu in the Compose window.
The Aliases Options dialog box is displayed.
Type the name for your alias in the Alias field.
Type the user addresses that will make up the alias in the Addresses field.
Each of these addresses should be in the form username@hostname and be separated by a comma, a space, or both.
Click Add to add the information in the Alias and Addresses fields to the scrolling list.
(Optional) To change an alias, select it and edit the Alias or Addresses field, as appropriate, then click Change.
(Optional) To remove an alias, select it and click Delete.
Click OK or Apply to make the settings take effect.
You can also work with aliases using Address Manager (see "To Create a Personal Alias Card").