An abusive e-mail message is characterized by harsh, insulting, or threatening language. Antonyms for this type of message could be polite, courteous, respectful, or friendly. Instead of using aggressive or demeaning language, the writer of a polite e-mail message aims to convey their message in a civil and well-mannered manner. The opposite of abuse is kindness; hence, a kind email message will always be appreciated, and the recipient is less likely to respond negatively. Other antonyms for abusive e-mail message include considerate, cordial, diplomatic, and thoughtful. Therefore, it is always important to communicate in a respectful and constructive manner, regardless of your emotions or motives behind the message.