Correspondence for landlords? (7)
I believe the answer is:
letters
I believe this clue is a double definition.
'correspondence' is the first definition.
(written correspondence)
'for landlords?' is the second definition.
(people who let property)
(Other definitions for letters that I've seen before include "eg E G" , "They may indicate a degree" , "Epistles" , "Written notes" , "...as, for example" .)