Messenger has some further messages (6)
I believe the answer is:
hermes
'messenger' is the definition.
(Greek messenger god)
'some further messages' is the wordplay.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'HERMES' is hidden in the letters of 'further messages'.
'has' is the link.
(Other definitions for hermes that I've seen before include "Winged messenger" , "Greek god of commerce and theft" , "Greek messenger of the gods, like Roman Mercury" , "Messenger and herald of the gods" , "Greek messenger god" .)