3.5 stars

Editor's Rating


User Rating

2 2


Win (All)
portable Portable

intelligent anti-spam filtering K9 is an anti-spam email filtering application that works in conjunction with your regular POP3 email program and automatically classifies incoming emails as spam (junk email) or non-spam. The program uses intelligent statistical analysis that can result in extremely high accuracy over time and eliminates the need for maintaining dozens of rules or constant updates to be downloaded. K9 learns from what you are considering spam and will automatically tag all future emails that match the pattern. You can then set up rules (in Outlook or Outlook Express etc.) to delete or move the spam-tagged messages. The initial results will be moderate, however, after processing a few dozen emails, K9 will detect a very large percentage of the spam and further improve accuracy over time. The advantage of this is that the program is able to filter spam based on your personal email statistics, rather than a generic or global list. The interface allows you to view your mail history and change the status for certain messages, thereby automatically updating the filter settings. Additional features include whitelist and blacklist, long-term statistics and more. K9 does not delete any messages automatically , but only tags them for further processing. A very accurate and highly customizable spam filtering method, that does however require some familiarity with email accounts. Copyright Snapfiles.com

Product Details

Publisher KeirNet (4) Price Free
Version 1.28 Last updated Apr 19, 2004
File Size 112 Kb Requirements None

User Reviews

5 stars50% 4
4 stars25% 2
3 stars0% 0
2 stars12% 1
1 star12% 1
Based on 8 reviews

Latest user reviews:

The best (free!!!) spam filter ever! - try it 5 stars by Luco53 Dec 23, 2007 (Read all my 2 reviews)
I am a Thunderbird mail client user and some day I was tiered of all those spam mails still coming in through Thunderbird's built in filter. So I searched the Web for some spam filtering software and I found out that the freeware (!!!) K9 could be the ultimate solution... The first three days K9 had to learn a lot, but I have to say that it's an excellent student. K9 has also a filter feature and I use this only for 'Casino' related spam mail. Now these mails too stay 100% out off my Inbox! Today I use K9 100 days and the other 97 days of use I had to correct just about 10 other mails, of which K9 thought it was spam, while it was not... If you are also tiered of all those daily spam and you are looking for a good peace of software, please listen: Give it a try and after some days you will see the results and you'll be another happy K9-user, I am sure! Also (or even) when you are a Thunderbird user. Luc show Review details
Bad product 1 stars by lmassoni Sep 01, 2006
Started very nice for 3 days, but, after that hung the system, and It use a lot of CPU, even with the check to put in lower priority. show Review details
Good but abandoned by developer 4 stars by Holmes Apr 27, 2006 (Read all my 11 reviews)
K9 is one of the best anti-spam tools around. Unfortunately, there are some bugs (RETR command instead of TOP, possibility to cheating program using bad mail boundaries...). K9 isn't updated about two years and this is the reason why I give only four stars for it. If the author change his mind and update K9 it can be really one of top anti-spam tools. show Review details
Read all 8 user reviews...