MSGTAG alerts you the moment an e-mail you've sent is opened so it is useful for auction buyers and sellers who are having problems with trading partners. You'll know when the message was sent, when it was viewed, and the elapsed time in between. You don't have to change anything about the way you write or send your e-mail. It works with almost all desktop e-mail clients including Outlook, Incredimail, Outlook Express, Eudora, and Netscape. All the recipient sees is a small MSGTAG footer letting them know that you've been notified that your message got through. When using MSGTAG, your privacy is respected.