Deliver post, including notes identifying roof timber (9)
I believe the answer is:
ridgepole
'timber' is the definition.
(wooden pole)
'deliver post including notes identifying roof' is the wordplay.
I cannot really see how this works, but
'deliver' could be 'rid' (e.g. deliver us from evil) and 'rid' is found in the answer.
'post' could be 'pole' (I've seen this in other clues) and 'pole' is found in the answer.
'notes' could be 'ge' and 'ge' is located in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ridgepole that I've seen before include "Top strut of tent" , "Horizontal member in a long tent" .)