Yes, I use the latest version of Incredimail which automatically junks unauthorised e mail.
Just a heads up, I'll quote from Incredimails privacy and usage policy
(b) Unless stated specifically otherwise therein, grant IncrediMail an unrestricted, perpetual, irrevocable license to use, reproduce, display, perform, modify, transmit and distribute the material, and you further agree that IncrediMail is free to use any ideas, know-how, concepts or techniques you send us for any purpose, without any compensation to you or any other person.
The link is here
http://www.incredimail.com/english/termsofuse.htmlYou might also like to review their privacy policy too.
If you find the programme usefull, that's great. Personally I woudn't go there, it's a bit like letting the postman read my mail and use the information for profit.