1. A character translation system comprising: an email editing part which displays an input character string in a character input display area on a display screen; a memory which stores pictogram data in correspondence with the character string; a search execution part which obtains pictogram data, specified by the character string, from the memory or an external search server device connected via a communication network; a list display generation part which displays pictogram images of the obtained pictogram data as translation candidates in a list form in a translation candidate display area on the display screen; and a display which displays the pictogram image, which is selected from among the translation candidates and which substitutes for the character string displayed in the character input area.