Patent ID: 8171096

Claim:
An electronic mail communication device, comprising: a receiving device that receives a first electronic mail which is a reply mail or a forward mail of a second electronic mail; a sequence map creation device that creates a sequence map in which correspondent objects corresponding to the correspondents of a series of electronic mails relating to the first electronic mail received by the receiving device are arranged along an x direction, and transmission objects indicating from whom and to whom each of the series of electronic mails was transmitted are arranged along a y direction in order of the date and time of communication, wherein the series of electronic mails includes the second electronic mail, the correspondent objects include a first correspondent object corresponding to a sender of the second electronic mail and a second correspondent object corresponding to a recipient of the second electronic mail, and the transmission objects include a specific transmission object indicating that the second electronic mail was transmitted from the sender of the second electronic mail to the recipient of the second electronic mail; and an output device that outputs the sequence map created by the sequence map creation device.