Sends his weird extra text (5)
I believe the answer is:
ships
'sends' is the definition.
('ship' can be a synonym of 'send')
'his weird extra text' is the wordplay.
'weird' indicates anagramming the letters.
'extra text' becomes 'ps' (I can't explain this - if you can you should believe this answer much more).
'his' is an anagram of 'shi'.
'shi'+'ps'='SHIPS'
Can you help me to learn more?
(Other definitions for ships that I've seen before include "Maritime transport" , "Large boats" , "Sea vessels" .)