Method and apparatus for providing electronic mail services during network unavailability

摘要

The present invention relates to a mobile device (200) for use with a wireless data communication providing electronic mail services centrally managed by a mail server. The mobile device stores electronic mail resources in a memory storage device that is persistent and not subjected to cache removal processing. The mobile device also has a display device (228), which displays at least a part of one or more of the electronic mail resources, and an electronic mail processor (226) which can perform an electronic mail operation with respect to the electronic mail resources stored in the memory storage device even when the wireless data communication network is not available to the mobile device. Accordingly, the mobile device can locally perform locally electronic mail services thereby avoiding significant delays when the network is unavailable.