Type of message (8)
I believe the answer is:
telegram
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">type of message</span>' is the definition.<br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for telegram that I've seen before include "Dispatch" , "Message sent by wire" , "Electric message" , "Message once sent by radio or electrical signals" , "Now obsolete communication over a wire" .)