Abusive letters (4,4)

I believe the answer is:
hate mail
(Other definitions for hate mail that I've seen before include "Poison-pen letters" , "Abusive messages" , "Nasty letters" , "Hostile message" , "Offensive correspondence" .)
I believe the answer is:
hate mail
(Other definitions for hate mail that I've seen before include "Poison-pen letters" , "Abusive messages" , "Nasty letters" , "Hostile message" , "Offensive correspondence" .)