Tenants may have to deal with such correspondence (7)
I believe the answer is:
letters
'correspondence' is the definition.
(written correspondence)
'tenants may have to deal with' is the wordplay.
I cannot really see how this works, but
'have' could be 'let' (letting is a kind of having) and 'let' is found in the answer.
This explanation may well be incorrect...
'such' is the link.
Can you help me to learn more?
(Other definitions for letters that I've seen before include "Written notes" , "They are bound to look after tenants" , "eg E G" , "Characters" , "Literary culture" .)