a communication apparatus which has a function of transmitting a document and a function of receiving a document includes a first sending device for transmitting image data of the document , a password , and the communication apparatus fax number to a plurality of destinations ; a sending memory for storing data relating to the plurality of destinations ; a receiving memory for storing received image data and a password and a sending apparatus fax number received with the received image data ; a device for indicating image data has been received with a password ; a printer for printing the received image data stored in the receiving memory when an input password is identical to the password stored in the receiving memory ; a reply device for retrieving the sending apparatus fax number from the receiving memory , dialing the sending communication apparatus fax number , and transmitting a reply report indicating the received image data has been printed ; a receiver for receiving reply reports ; a comparer for comparing the plurality of destinations stored in the sending memory and the reply reports returned by the reply device of the plurality of destinations ; and a printer for printing a result of the comparer .