Bond character gets something in the post about a pyramid scheme? (5,6)
I believe the answer is:
chain letter
'something in the post about a pyramid scheme?' is the definition.
(a pyramid scheme might involve chain letters)
'bond character' is the wordplay.
'bond' becomes 'chain' (chain is a kind of bond).
'character' becomes 'letter' (synonyms).
'chain'+'letter'='CHAIN-LETTER'
'gets' acts as a link.
(Other definitions for chain letter that I've seen before include "one sent mushrooming?" , "Cascading correspondence" , "The clarinet (anag.)" , "Fast-spreading communication" , "Fraudulent scheme" .)