Patent ID: 7252198

Claim:
A mail system comprising: a source mail server managing a mail address of a mail source sending an e-mail; a destination mail server managing another mail address as a destination mail address of one or more destinations which receive the e-mail from said mail source through said source mail server and said destination mail server; a mail address manager managing respective destination mail addresses, said mail address manager being operative, in response to updating of the destination mail address of at least one destination, to register a new destination mail address in correlation with the old destination mail address; a mail storing section temporarily storing a particular e-mail, which is addressed to said old destination mail address, until said new destination mail address is registered by said mail address manager; and a mail sending section sending the particular e-mail to said new destination mail address when said new destination mail address is registered in said mail address manager, said mail address manager, said mail storing section and said mail sending section all of which are interconnected between said source mail server and said destination mail server.