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K9 Alternatives

K9 is described as '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 without the need for maintaining dozens of rules or constant updates to be downloaded' and is an app. There are more than 10 alternatives to K9 for a variety of platforms, including Windows, Linux, Mac, Microsoft Office Outlook and Thunderbird. The best alternative is Mailwasher, which is free. Other great apps like K9 are Spamihilator, POPFile, SPAMfighter and SpamSieve.

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K9
  0
  • FreeProprietary
  • Windows

K9 is an email filtering application that works in conjunction with your regular POP3 email program and automatically...

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  1. Mailwasher icon

    Mailwasher

    • FreemiumProprietary
    • Windows
    • Linux
    16 alternatives to Mailwasher 

    Over 8 million people use MailWasher as their spam filter

    Introducing MailWasher, the leader in spam filter software, and the easiest way to check and manage your e-mails before you download them.

    MailWasher is free to use and wont ever expire. It works with Outlook, Outlook Ex.

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    Features
    1.  Spam FilterMailwasher can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
      Discontinued

      The program is no longer updated. Last version, 7.7, released in November 2015, can be still downloaded from the official website.

      Feature Comparison
      Mail Inbox
    • Spamihilator icon

      Spamihilator

      • FreeProprietary
      • Windows
      12 alternatives to Spamihilator 

      Spamihilator works between your E-Mail client and the Internet and examines every incoming E-Mail. Useless spam mails (Junk) will be filtered out. This process runs completely in the background.

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      Features
      1.  Spam FilterSpamihilator can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.


      • POPFile icon

        POPFile

        • FreeOpen Source
        • Mac
        • Windows
        • Linux
        11 alternatives to POPFile 

        POPFile classifies email into categories you define. It can sort into spam and not spam or into any number of categories you like (e.g. work, personal, important project, hobby, etc.).

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        Features
        1.  Spam FilterPOPFile can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
        • SPAMfighter icon

          SPAMfighter

          • FreemiumProprietary
          • Windows
          11 alternatives to SPAMfighter 

          SPAMfighter is a free spam filter for Microsoft Outlook, Outlook Express, Thunderbird, Windows Mail and Windows Live Mail, that automatically and efficiently filters spam. Install SPAMfighter now and be spam free in 2 minutes.

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          Features
          1.  Spam FilterSPAMfighter can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
          Screenshot
        • SpamSieve icon

          SpamSieve

          • Mac
          15 alternatives to SpamSieve 

          SpamSieve is an extremely accurate and easy to use Bayesian spam filter for Mac e-mail programs. Macworld's "Software of the Year".

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          Features


        • BullGuard Spamfilter icon

          BullGuard Spamfilter

          • FreeProprietary
          • Windows
          • Microsoft Office Outlook
          • Thunderbird
          18 alternatives to BullGuard Spamfilter 

          Most people find spam e-mails the biggest nuisance on the Internet. Today, spam e-mails account for over 80% of all e-mail traffic and their volumes increase daily. Strike back with BullGuard Spamfilter.

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          Features
          1.  Spam FilterBullGuard Spamfilter can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
            Discontinued

            BullGuard Spamfilter was discontinued on 12 July 2013. The product is no longer available on the official website.

            Screenshot
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          • Spamato icon

            Spamato

            • FreeOpen Source
            • Mac
            • Windows
            • Linux
            11 alternatives to Spamato 

            Spamato is a spam filter system that combines several anti-spam techniques, from which thousands of users benefit. It is available as an add-on for Thunderbird and Outlook, and as a stand-alone proxy for other email clients. IMAP and POP are supported.

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            Features
            1.  Spam FilterSpamato can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
              Discontinued

              The project is no longer developed. Last version, 0.99.9, released in August 2007, can be still downloaded from SourceForge.

              Screenshot
            • SpamBayes icon

              SpamBayes

              • FreeOpen Source
              • Mac
              • Windows
              • Linux
              • IncrediMail
              • Microsoft Office Outlook
              • Thunderbird
              • Microsoft Outlook Express
              • Windows Live Mail
              11 alternatives to SpamBayes 

              The SpamBayes project is working on developing a statistical (commonly, although a little inaccurately, referred to as Bayesian) anti-spam filter, initially based on the work of Paul Graham. The major difference between this and other, similar projects is the emphasis on testing...

               SpamBayes has no features, suggest some!
              Screenshot
            • Spam Reader

              • FreemiumProprietary
              • Windows
              15 alternatives to Spam Reader 

              Spam Reader is a free anti-spam add-on for Microsoft Outlook. The software uses the most reliable approach to block junk emails - Bayesian algorithm based on statistical analysis, capable to be adjusted to user's needs and detect up to 98% of spam messages.

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              Features
              1.  Spam FilterSpam Reader can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
                Screenshot
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              • Mailinblack icon

                Mailinblack

                • Software as a Service (SaaS)
                12 alternatives to Mailinblack 

                The leading solution to protect your business and your employees from new threats by email: malware, phishing, ransomware, spam, etc. Opt for security at your fingertips and convenience on a day-to-day basis!

                 Mailinblack has no features, suggest some!
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