I've getting an increasing problem of spam in Mozilla Thunderbird. I used to use the build in spam filter, as it did a pretty good job, but as of late its been getting a bit laid back and letting quite a bit of crap into my inbox. I've finally got fed up and installed the Spamato extension, but thats worse that the built in one. Out of the 1000+ emails I get each week only about 5 of them are geniune, and I must be manually clicking spam on over 100 message a day. Can anyone suggest something that can sort this problem out? Ideally a free solution, but if it costs money to fix, I might be tempted to pay it. Any ideas would be much appreciated.