MOBILE TERMINAL DEVICE

1 . A mobile terminal device comprising:

an image data storage area which stores acquired image data;

a mail sender and receiver which sends and receives electronic mails; and

an image management data storage area which, when said mail sender and receiver send an electronic mail with the image data stored in said image data storage area attached thereto, stores image data identifying information for identifying the image data attached to the sent electronic mail and a returned message included in an electronic mail which is returned in reply to the sent electronic mail, in association with each other.

2 . The mobile terminal device according to claim 1 , further comprising:

an image data editor which generates combined image data representing a combination of said image data stored in said image data storage area and said returned message stored in combination with the image data identifying information for identifying said image data in said image management data storage area, and stores said combined image data in said image data storage area.

3 . The mobile terminal device according to claim 2 , wherein said image data editor stores predetermined keywords and decoration images depending on the keywords in association with each other, and generates said combined image data using a decoration image depending on a keyword which is included in said returned message.

4 . The mobile terminal device according to claim 1 , wherein said image data management storage area stores only a range of said returned message which is selected by an external action, in association with said image data identifying information.

5 . The mobile terminal device according to claim 1 , further comprising:

a phonebook data storage area for storing phonebook data;

wherein said image management data storage area stores only a portion of said returned message which is selected based on a registered name stored in said phonebook data storage area and a preset keyword, in association with said image data identifying information.

6 . An image data managing method for managing acquired image data, comprising:

storing said image data;

sending an electronic mail with said image data attached thereto;

receiving an electronic mail which is returned in reply to the sent electronic mail; and

managing image data identifying information for identifying the image data attached to the sent electronic mail and a returned message included in the received electronic mail, in association with each other.

7 . (canceled)