06112227 is referenced by 265 patents and cites 5 patents.

A method is provided for preventing the delivery of unwanted electronic mail messages to a destination client. An original electronic mail message is first received from a source client at a destination server. Next, a reply electronic mail message is sent from the destination server to the source client requesting the source client to complete a registration process to register the source client's electronic mail address with the destination server. The original electronic mail message is only sent from the destination server to the destination client when the source client properly registers the source client's electronic mail address.

Title
Filter-in method for reducing junk e-mail
Application Number
9/129777
Publication Number
6112227
Application Date
August 6, 1998
Publication Date
August 29, 2000
Inventor
Jeffrey Nelson Heiner
50 Edward Dr., Franklin Park, 08823
NJ, US
Agent
Larson & Taylor
IPC
G06F 15/16
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