Rakuten, Inc.

Naohiro Yanase

Akihiro Kato

Hidetaka Sugawara

Ryohei Shimada

To provide an e-mail system for ensuring that a user is able to know content of an e-mail sent addressed to the user even when the e-mail is not delivered to the user. An e-mail sending unit () sends an e-mail sent addressed to the alternative mail address of the user to the actual mail address of the user, after setting a predetermined destination as a destination of a notice of failed delivery, if caused, of the e-mail. In a case where the notice of failed delivery of the e-mail sent addressed to the actual mail address of the user is received by the predetermined destination, an undelivered mail data saving unit () saves undelivered mail data indicating the undelivered e-mail in an undelivered mail data storage unit (). An undelivered mail data sending unit () sends undelivered mail data indicating an e-mail sent addressed to the actual mail address of the user and failed to be delivered to a terminal device used by the user.

E-mail system, control method for e-mail system, relay device, program, and information storage medium

In order to make a user intuitively recognize labor of traveling on a route, a map information providing server () stores map data including an undulation of an actual topography, stores information on first routes each containing one or more routes from a point, as a start point, corresponding to information on the user in the map data, to a plurality of predetermined points in a region containing the point corresponding to the information on the user in the map data, in association with identification information on the user, determines a second route from a start point to an endpoint specified based on a request from the user, directly or indirectly compares a length of the second route and an undulation on the second route, and a length of each of the first routes and an undulation on each of the first routes with each other in the map data, and provides the user with information on a comparison result.

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Tokyo, Japan

Naohiro Yanase