For home free edition, are there some plugins?, like mail spam?
This was discussed before…
The fear is to take avasto into a bloatware-all-in-one-systemwork-like-application 
Next will be the firewall, the pop-up killer… :
Ok, it’s just an opinion based on layered defension.
OK thank you for the answer.
What spamkiller do u recommend me?
I use MailWasher Pro 4.1
No problems at all and it works great with avast!
Spamkiller is also good one, but MacLover just reported some problems with that software ( link: http://forum.avast.com/index.php?board=2;action=display;threadid=5232 )…
My advice: stick to MailWasher, you can’t go wrong.
Greetz !
See Links bellow in my signature.
I do recommend Spamihilator (www.spaihilator.com) fully integrated with your email client and avast. Runs smoothly and learns quickly. Free. 
Little typo on the URL http://www.spamihilator.com/