A filter identifies an address or subject or keyword in a message and, if found, sends that message to the designated mailbox. Mailboxes with new mail highlight themselves which allows you to prioritize your mail responses. And assist you in locating specific messages from client, a colleague or a friend. The real advantage of nicknames is that you can, with confidence, know that you have included everyone in the group and not mis-typed an email address. Most programs will allow you to make a nickname from an incoming email message.
Signatures can be helpful in marketing an individual's or organization's website.
It is also advisable to place your phone and fax numbers and postal address in your signature file. Some people like to add their favorite quote. A number of the newer email programs allow multiple signature files. You can often attach full text, pictures or other files to your signature or alternative signature file and automatically send along that information. Avoid using the v-card type of Signature files available in Netscape mail and other email programs.