Letter carrier's sackful (4)

I believe the answer is:

mail

'letter carrier's sackful' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for mail that I've seen before include "letter?" , "Flexible armour" , "Post or body armour" , "Letters and parcels" , "Posted letters" .)

I've seen this clue in the Newsday and the L.A. Times Daily.

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