I’ve been using SpamArrest to limit the amount of spam I get (which is a lot - especially to a specific inbox) for the last year. SpamArrest is a challenge and response system (Hi, you just sent an email to scott. Please respond to this email to get on his white list) that usually works ok. However, there have been a lot of instances - particularly over the weekends - in which the filter fails and the spam comes flooding through. In addition I was using the free version and the interface wasn’t that great. I just switched to CloudMark (http://www.cloudmark.com) and couldn’t be happier. It plugs into Outlook for a free trial ($39.95 per year) and filters in Outlook instead of going to a browser. Once I tuned the spam filter a little (white listing some newsletters I get, etc.) it is piece of cake. It does take longer to synch my email and I do have to delete all the spam in the spam box - but I am much happier.