Commercial outfit rejected notice -- receivers needed! (10)
I believe the answer is:
addressees
'receivers needed' is the definition.
I can't judge whether this definition defines the answer.
'commercial outfit rejected notice' is the wordplay.
'commercial' becomes 'ad' (abbreviation for advertisement).
'outfit' becomes 'dress' (I've seen this in another clue).
'rejected' is a reversal indicator.
'notice' becomes 'see' (notice can mean to spot or see).
'see' back-to-front is 'ees'.
'ad'+'dress'+'ees'='ADDRESSEES'
Can you help me to learn more?
(Another definition for addressees that I've seen is " Group getting letters".)