Mailbox Guard lets you fight spam, junkmail and viruses before they get into your inbox. It scans and analyzes every message that arrives on your ISPs mail server and ranks it s risk in four categories: Virus, Spam, X-Rated and Bad Language. Depending on the risk factor of the content, each mail is color coded in red, orange, yellow or green. You can specify which level should automatically mark messages for deletion or choose messages individually. Selected items can then be deleted on the server, without being downloaded to your local PC. Additional features include background mail check, notification on new mail, plain-text preview and more. Mailbox Guard uses a built-in smart filtering engine that detected all spam messages during our test.