Crossword Genius

Post held in IT? (1-4)

Ross

I believe the answer is:

e-mail

I'm a little stuck... Click here to teach me more about this clue!

'post' is the definition.
(I have seen 'Electronic post ' mean 'e-mail' so perhaps 'post' could also mean 'e-mail')

'it?' is the wordplay.
I cannot really see how this works, but
'it?' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is present in the answer.
The remaining letters 'mail' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

'held in' is the link.

Can you help me to learn more?

(Other definitions for e-mail that I've seen before include "A lime (anag.)" , "Online message" , "Electronic message" , "Online post" , "Send a message" .)

I've seen this clue in The Sun.
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