You can block junk faxes by adding the sender’s fax number and SSID to your list of blocked callers. When a fax is received, the sender is checked with the blocked callers list. If a match if found the fax will be placed into your “Junk Faxes” folder and kept there for 7 days, after which time it will be automatically removed. Notifications are not sent for junk faxes and they are not counted as usage.