SharingItem.Allow Method (Outlook)
Allows a sharing request and sends a sharing response to the sender of the SharingItem.
The Allow method can only be called on SharingItem objects with a Type property value of olSharingMsgTypeRequest or olSharingMsgTypeInviteAndRequest.
The Type property of the sharing response sent when this method is called is set to olSharingMsgTypeResponseAllow.
Sharing is allowed immediately after this method is called, regardless of whether the sharing response was received.