You can address a voice message to one or multiple recipients, and to private and system distribution lists. You address a message by using the phone keypad to spell the name of the user or list, or to enter the extension or list number. The following special delivery options are available:
Urgent
Mark a message urgent so that it is sent before regular messages.
Return Receipt
Request a return receipt so that you are notified when the recipient opens the message.
Note: You may or may not receive receipts in response to your requests, depending on how your recipient's and your voicemail accounts are set up. And when you do receive receipts, they can be either read receipts or delivery receipts, again depending on how the voicemail accounts are set up.
Future Delivery
Deliver the message at the future date or time that you specify.