PURPOSE: To facilitate the recognition of the approval of an inquiry report by impressing an approval seal on an electronic mail by giving a seal print file.

CONSTITUTION: In a B department, the accumulated inquiry report is taken out of a mail box by individual departments 5-j. At the time of approving the inquiry report, a password is inputted for a work station 2B, for example, and it is transferred to a host system 1 as seal print data. The host system 1 receiving seal print data transfers the seal print corresponding to seal print data on the seal print file 6 to the work station 2B based on the seal print data. Thus, the seal print is displayed on a screen on the work station 2B. The B department receiving the seal print impresses the seal print concerned in the approval column of the inquiry report by using a mouse, for example. When a processing is terminated, the inquiry report is transferred to the host system 1 and the inquiry report is accumulated in the mail box by individual departments 5-1 in a C department in accordance with a defined sending route.