One from the landlord? (6)
I believe the answer is:
letter
'landlord?' is the definition.
(landlords let property)
'one from the' is the wordplay.
I cannot really see how this works, but
'one' could be 'er' (I've seen this in other clues) and 'er' is found in the answer.
'from' could be 'e' (I've seen this in other clues) and 'e' is located in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for letter that I've seen before include "Alphabetic symbol" , "Item sent - character" , "Epistle, missive" , "Piece of correspondence" , "Written note" .)