How to filter out Spam on the Mac?

I have been using OSX Mail application since years now, I have been activating the Junk filter also since all that time, and, as much as I can recall, I have been happy with it... a long time ago. But these last years, as the spam got really out of hand, I ended up using up most of my email-reading time in email-deleting and email-searching. Piles of junk at the door every morning, every night. Piles and piles. I tried to define additional rules to kind of nail this terrible thing. With no real success. I understand a few reasons why spammers can still spam us: they spoof other people email addresses, they set many random words in the email bodies, and use images as spam contents. All this is very annoying.

Then I discovered, now a few days ago, SpamSieve for the Mac. This plugin takes the same training approach, where you are the one defining the good emails and the spam emails. It then builds a Corpus, which is a list of words, appended at each new email qualification, and associated with a probability for each word to be part of a spam email. Then this probability can be used to move automatically an email to a Spam folder - when greater than 75%. Between 50 and 75% you will have to choose and tell SpamSieve which is which. Everything that comes out with a probaility lower than 50% will remain in your mailbox or go to whichever folder your other Mail rules define.

That's the principle, roughly. What makes SpamSieve appealing to me is:

• its simplicity to operate and make changes in configuration
• its speed of execution
• its apparent efficiency
  

I am running a 30-days trial version for the moment, but will definitely purchase a license if the program is as good as it already seems. Will keep you posted on this.