Spar put in advertisement for e-mail manager (10)
I believe the answer is:
postmaster
'email manager' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'spar put in advertisement' is the wordplay.
'spar' becomes 'mast' (mast is a kind of spar).
'put in' indicates putting letters inside.
'advertisement' becomes 'poster' (I've seen this before).
'mast' put into 'poster' is 'POSTMASTER'.
'for' is the link.
Can you help me to learn more?
(Other definitions for postmaster that I've seen before include "who runs a local office?" , "Mail chief" .)