Patent ID: 7624146

Claim:
A method of manipulating a sent e-mail addressed by a sender to a plurality of addressees, said sent e-mail comprising an address header and a body, wherein said method comprises: routing a modification message over a data network to a server that operates independently from any e-mail processing means associated with each of said addressees and on which at least the body of said sent e-mail is stored, said modification message being sent by said sender and for modifying said e-mail body; and modifying said e-mail body at said server according to said modification message if said e-mail body has not been accessed on said server by any of said addressees, wherein the modification of said e-mail body at said server in response to said modification message is denied if at least one addressee has accessed said e-mail body on said server, and wherein the modification of said e-mail body occurs at said server independently of any e-mail processing means associated with each of said addressees.