The invention provides a technique of automatically checking the validation of a destination address to which electronic mail is to be transferred. If the destination address is validated, the transfer of the mail to the address is permitted, so that no mail is transferred to the wrong address. An electronic mail management device (1, 2) for managing the destination addresses to which electronic mail is to be transferred comprises: means for receiving a request to set a destination address corresponding to a receiving mail address, and means for checking the validity of the destination address.