In addition, a separate category of preset filters handles special cases that are not easily covered with the normal filters. You can add your own, and edit or remove the standard filters. Sender filters let you specify separate conditions for the user name and domain name. Is blank and Is numeric . Each filter can be fine-tuned by selecting which of ten different header types that should be scanned for address information.
Subject filters make it easy to filter on words or phrases in the message subject.
Nearly a dozen different conditions are available, and make it possible to detect blank or missing subjects. Message text filters are one of the most powerful features of SpamKiller. The standard filters were designed after careful analysis of thousands of spams, and look for words and phrases that are common in spam. Country filters are unique to SpamKiller, and are designed to trap spam that is routed through other countries, a practice employed by many spammers to avoid problems with their Internet Service Providers. The country filters let you block messages that have been sent from or routed through any country.