An information providing server has information on plural printers. The information providing server provides a user of a portable terminal with the information on the plural printers by sending the information on the plural printers to the portable terminal. The portable terminal sends an e-mail to which a file to be printed is attached to a printer selected by the user. Each of the plural printers has a plurality of print conditions to which different e-mail addresses are respectively assigned. The printer that has received an e-mail specifies a print condition from an e-mail address indicating the destination of the e-mail. The printer then prints the file attached to the received e-mail under the specified print condition.