NuPoint UM offers message processing flexibility in the related areas of:
Defining what happens to unplayed messages
Controlling when the server sends message receipts
Feature bit 145 (Message stays in original queue) determines how the server classifies a message if a mailbox owner does not explicitly keep a message (by pressing K) or discard it (by pressing D).
Feature bit 147 (Send receipt after full play) controls whether the server waits for a mailbox owner to explicitly keep a message (by pressing K) or discard it (by pressing D) before sending a receipt to the sender of that message. The server makes this decision only after a mailbox owner plays the entire message.
The presence of this feature bit works on a partially played message exactly as it does on a completely played message. Otherwise, it would be possible for the server to put a partially played message into a mailbox owner’s saved queue but not send a receipt.
Feature bit 147 has an effect only when it is in the same FCOS as feature bit 145. Refer to Feature Bit Descriptions for more information about how these two feature bits interact.