Crossword Genius

No stamp needed to liberate a pole (8)

Ross

I believe the answer is:

freepost

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'no stamp needed' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'liberate a pole' is the wordplay.
'liberate' becomes 'free' (synonyms).
'a pole' becomes 'post' (post can mean a pole or stake).
'free'+'post'='FREEPOST'

'to' acts as a link.

Can you help me to learn more?

(Other definitions for freepost that I've seen before include "No stamp needed here" , "mail service" .)

I've seen this clue in the Sydney Morning Herald.
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