.file extension RUL - SpamAI spam rule repository file
File extension RUL description:
File extension used by SpamAI.
Associated applications to file extension RUL:
Company / developer:
DAIR Computer Systems
SpamAI is a universal POP3 anti-spam filter which runs on the Windows 2000, XP, 2003, or Vista computer you already own to filter email.
If you get less than 100 spam per day, typical "hands-off" filtering rates of 80-90% from your email client reduce your spam to a manageable 10-20 per day.
If you get 1000/day, you really need to move beyond your email client's built-in filtering and achieve 98-99% precision to reduce your spam to the same manageable level.
Above 10,000 per day, the cpu and internet overhead of a client side solution like SpamAI becomes noticeable and a server side solution is needed to reduce the flow to client.