MailEye - Version 1 MailEye is a POP email notification utility. It runs in the background, periodically checking your email accounts for messages. When there is mail, MailEye can play sounds, talk, run your main email client, or perform other actions you specify, all automatically. And you can simplify your daily routine by configuring MailEye to run when you turn on your system, checking your email in one easy step.