The Reply option provides users with a dialog for replying to the sender’s message. When users select this option control passes to the reply.jsp file, which asks users if the reply should go only to the sender, or to everyone included in the original email. To answer this question, users select To Sender or To All, both of which pass control to the compose.jsp file. This action brings up the compose page on users’ browsers, where they can compose a message (see Compose).