Information processing apparatus, control method of E-mail appended document in that information processing apparatus, and storage medium storing program thereof

1. An information processing apparatus comprising:

an e-mail reception unit configured to receive an e-mail message to which a document is attached;

a signature determination unit configured to determine whether or not a digital signature is appended to the e-mail message;

a saving unit configured to save the document attached to the e-mail message as an approved document, which is approved for printing, when the signature determination unit determines that the digital signature is appended to the e-mail message, and save the document attached to the e-mail message as a non-approved document, which is not approved for printing, in association with an e-mail address of the e-mail message when the signature determination unit determines that the digital signature is not appended to the e-mail message;

an acquisition unit configured to acquire user information;

a retrieval unit configured to retrieve the non-approved document saved in association with an e-mail address that is associated in advance with the user information;

a re-saving unit configured to change the non-approved document retrieved by the retrieval unit to an approved document, and saves the approved document;

a setting screen display unit configured to display a screen required to set the user information and the e-mail address in association with each other; and

an e-mail address determination unit configured to determine whether or not an e-mail address of the e-mail message received by the e-mail reception unit is the e-mail address which is associated in advance with the user information by the setting screen display unit,

wherein when the e-mail address determination unit determines that the e-mail address of the received e-mail message is the e-mail address which is associated in advance with the user information, the signature determination unit determines whether or not a digital signature is appended to the e-mail message.

2. The apparatus according to claim 1 , further comprising: a list display unit configured to displays a list of the non-approved documents retrieved by the retrieval unit,

wherein the re-saving unit changes the non-approved document, which is selected by a user indicated by the user information from the list of the non-approved documents displayed by the list display unit, to an approved document, and saves the approved document.

3. The apparatus according to claim 1 , wherein the user information includes an ID and a password.

4. The apparatus according to claim 1 , wherein the approved document is a document, which is to be charged for printing.

5. A control method of an e-mail attached document executed by an information processing apparatus, the method comprising:

an e-mail reception step of receiving an e-mail message to which a document is attached;

a signature determination step of determining whether or not a digital signature is appended to the e-mail message;

a saving step of saving the document attached to the e-mail message as an approved document, which is approved for printing, when it is determined in the signature determination step that the digital signature is appended to the e-mail message, and saving the document attached to the e-mail message as a non-approved document, which is not approved for printing, in association with an e-mail address of the e-mail message when it is determined in the signature determination step that the digital signature is not appended to the e-mail message;

an acquisition step of acquiring user information;

a retrieval step of retrieving the non-approved document saved in association with an e-mail address that is associated in advance with the user information;

a re-saving step of changing the non-approved document retrieved in the retrieval step to an approved document, and saving the approved document;

a setting screen display step of displaying a screen required to set the user information and the e-mail address in association with each other; and

an e-mail address determination step of determining whether or not an e-mail address of the e-mail message received in the e-mail reception step is the e-mail address which is associated in advance with the user information in the setting screen display step,

wherein the signature determination step is responsive to a determination that the e-mail address of the received e-mail message is the e-mail address which is associated in advance with the user information.

6. A non-transitory computer-readable storage medium storing a program for controlling a computer to function to:

receive an e-mail message to which a document is attached;

determine whether or not a digital signature is appended to the e-mail message;

save the document attached to the e-mail message as an approved document, which is approved for printing, when it is determined that the digital signature is appended to the e-mail message, and save the document attached to the e-mail message as a non-approved document, which is not approved for printing, in association with an e-mail address of the e-mail message when it is determined that the digital signature is not appended to the e-mail message;

acquire user information;

retrieve the non-approved document saved in association with an e-mail address that is associated in advance with the user information;

change the retrieved non-approved document to an approved document, and save the approved document;

display a screen required to set the user information and the e-mail address in association with each other; and

determine whether or not an e-mail address of the e-mail message received is the e-mail address which is associated in advance with the user information,

wherein the determination of whether or not a digital signature is appended to the e-mail message is responsive to a determination that the e-mail address of the received e-mail message is the e-mail address which is associated in advance with the user information.