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EMAIL FILTERING USING RECIPIENT REPUTATION

  • US 20090037469A1
  • Filed: 12/05/2007
  • Published: 02/05/2009
  • Est. Priority Date: 08/02/2007
  • Status: Active Grant
First Claim
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1. A method for determining whether an incoming email message entering an email system with a plurality of recipients addressed to one or more of the recipients is ham or spam, the method comprising:

  • accumulating counts of unsolicited ham email messages and unsolicited spam email messages received by each recipient;

    calculating recipient reputations for recipients of email messages using the accumulated counts; and

    calculating a message score for an email message using the recipient reputations of the recipients of the email message.

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