The 'jabber:x:event' namespace defines extensions used to request and respond to events relating to the delivery, display, and composition of messages.
By attaching a jabber:x:event extension to a &MESSAGE; element, the sender can track stages in the delivery of that message to its recipient.
-Note: A more modern protocol extension for this functionality has been been defined in &xep0085;.
+Note: More modern protocol extensions for this functionality have been defined in &xep0085; for the composing and offline events and in &xep0184; for the delivered and displayed events; those specifications supersede this one.