Daily, say, sent back fee (6)
I believe the answer is:
charge
'fee' is the definition.
(thesaurus)
'daily say sent back' is the wordplay.
'daily' becomes 'char' (I've seen this before).
'say' becomes 'eg'.
'sent back' is a reversal indicator.
'eg' in reverse letter order is 'ge'.
'char'+'ge'='CHARGE'
(Other definitions for charge that I've seen before include "The price asked for goods or services" , "responsibility" , "Price asked; fill" , "Impose fee on" , "How much" .)