Service Questions What does MX Guarddog do? After registering will my email automatically be redirected to the MX Guarddog servers? How does the signup process work? What is the cost to use MX Guarddog? Can you explain the text link for service concept? Is the spam & antivirus protection service really free? What spam filters do you use? Can I test the flow of mail before going live? How are messages identified as spam? Are computer viruses blocked? Does MX Guarddog place advertisements in messages? Who is MX Guarddog?