ELECTRONIC MAIL PROCESSING UNIT AND ELECTRONIC MAIL PROCESSING METHOD

PROBLEM TO BE SOLVED: To provide an electronic mail processing unit that can easily and properly exchange electronic mails. SOLUTION: The electronic mail processing unit is provided with a storage section 48 that stores mail addresses in cross-reference with intermediate mail addresses and stores mail addresses being mail transmission destination objects, a mail reception section 32 that receives a mail, an address processing section 34 that detects the intermediate mail address corresponding to the mail address of the mail sender from the storage section 48 and selects a mail address being at least one transmission destination among mail addresses, a mail setting section 36 that sets the intermediate electronic mail address detected as the sender and sets a mail address detected as the destination, and a mail transmission section 40 that transmits the mail whose sender and destination are set.