Hate mail

Hate mail (as electronic, posted, or otherwise) is a form of harassment, usually consisting of invective and potentially intimidating or threatening comments towards the recipient.

Senders of hate mail normally send anonymous letters or pose as someone else (either a different or fictitious individual) in order to avoid being identified and tracked down, as the nature of some hate mail would inevitably result in criminal charges if the sender was identified.

manager, received hate mail including a package containing a nail bomb from Rangers fans.

They also received several letters with content including that they "got what they deserved" for allowing their daughter to play out on the Sabbath.

[5] Her mother, Sara Payne, now a child protection campaigner, closed her Twitter social networking account in November 2014 following a long campaign of abuse by trolls, which included allegations that she had made a vast amount of money from her media work and was "glorying in a lavish lifestyle" as a result, suggestions that Roy Whiting (convicted of Sarah's murder) was innocent, threatening messages from Twitter users claiming to be paedophiles, and remarks about the death of her former husband Michael from an alcoholism related illness the previous month.

The first page of the "Dear Boss" letter , dated 25 September 1888
Zodiac killer 's letter sent to the San Francisco Chronicle on July 31, 1969