A method for automatically choosing an electronic correspondence signature line, having an electronic search agent for scanning electronic correspondence for the designated destination address of the electronic correspondence, and retrieving at least one designated destination address for the electronic correspondence. The method also includes determining a domain name associated with the at least one designated destination address for the electronic correspondence retrieved by the electronic search agent and comparing the domain name for the at least one destination address with a predetermined list of domain names. The method also includes selecting at least one signature line for the electronic correspondence from a plurality of signature lines, based on the at least one domain name associated with the designated destination address of said electronic correspondence and attaching the at least one selected signature line to the electronic correspondence designated for the destination address.