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Practical techniques for reducing unsolicited electronic messages by identifying sender's addresses

  • US 20030233418A1
  • Filed: 06/18/2002
  • Published: 12/18/2003
  • Est. Priority Date: 06/18/2002
  • Status: Active Grant
First Claim
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1. In a computer system for managing incoming electronic messages for a recipient, a method for categorizing sender'"'"'s addresses for purposes of determining whether the sender'"'"'s addresses are authorized for sending electronic messages to the recipient, comprising the acts of:

  • receiving an incoming electronic message that includes a sender'"'"'s address;

    categorizing the sender'"'"'s address as being authorized for sending electronic messages to the recipient, unauthorized for sending electronic messages to the recipient, or unconfirmed as to whether the sender'"'"'s address is authorized or unauthorized;

    after the act of categorizing the sender'"'"'s address, reevaluating the category of the sender'"'"'s address by periodically sending a request to the sender'"'"'s address, wherein the request is to be answered only by receiving input from a person; and

    recategorizing the sender'"'"'s address as being authorized, unauthorized, or unconfirmed based on a response to the request or lack thereof.

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