| 摘要 |
Described are systems and methods for handling presence messages intended for an offline user. When an online user wants to send an instant message to an offline user, a presence-sensing server detects and notifies the online user of the status of the offline user. The presence-sensing server then can either store the instant message in the server or send the instant message to the offline user via his preset preferred means of contact. The offline user can then filter and decide whether to participate in an online instant messaging session with the online user or to respond while remaining offline using the non-instant message method.
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