MAIL INFORMATION EXTRACTION DEVICE, MAIL DETERMINATION LIST CREATION DEVICE, MAIL INFORMATION EXTRACTION METHOD, MAIL DETERMINATION LIST CREATION METHOD, AND COMPUTER PROGRAM

摘要

PROBLEM TO BE SOLVED: To contribute to a reduction in burden in creation of a mail determination list, such as a black list or a white list used for determination of junk mail.SOLUTION: A mail information extraction device includes: a mail information extraction part 11 that extracts predetermined mail information from mail data having header information on each of a plurality of pieces of mail exchanged in the past; and a specific information extraction part 12 that extracts, from first mail information that is mail information on each of the pieces of extracted mail and relatively difficult to camouflage and second mail information that is relatively easy to camouflage, the first mail information in which the plurality of different pieces of second mail information are combined with the first mail information.SELECTED DRAWING: Figure 1