A communication apparatus includes: an e-mail creating unit configured to create the e-mail with specifying an e-mail address of a destination; an e-mail transmitting/receiving unit configured to transmit/receive the e-mail; a display unit provided with a received mail display area for displaying a received e-mail set if necessary and a created mail display area for displaying an e-mail being created; and a control unit configured to set the received mail display area and display the received e-mail if the e-mail is received during creating the e-mail and the e-mail address of a sender of the received e-mail matches with the e-mail address of the destination of the e-mail being created.