Abstract: A wireless information device programmed with an e-mail manager program that deletes the body and/or an attachment to an e-mail message cached locally on the device, leaving the header information, in order to free up memory space in the device. The header information typically includes information such as sender's name, the e-mail message subject and the date of the e-mail message. With the present approach, it is not necessary to delete entire e-mail messages in order to free up memory space on the WID, nor is it necessary to impose restrictions on e-mail functionality, such as prohibiting the receipt of attachments by a WID. Instead, users can manually (or the WID itself can automatically) delete all but the header information of e-mails stored locally on the WID. This allows offline operations to be performed on the incomplete e-mail (e.g. sorting, moving, replying etc.). The original e-mail can also be re-populated with the deleted content when synchronising with the original mail server.