In-box filler (4)
I believe the answer is:
(Other definitions for mail that I've seen before include "Paper" , "Form of armour; post" , "Posted letters" , "Letters - armour" , "Letters and parcels" .)
I believe the answer is:
(Other definitions for mail that I've seen before include "Paper" , "Form of armour; post" , "Posted letters" , "Letters - armour" , "Letters and parcels" .)