I have lived long enough to say that many of our means of communication do not work in resolving conflict or issues. Relationship are ruined because we do not communicate well. Unfortunately, lots of conflicts are direct result of miscommunication via emails and other form of electronic communications.
Some major forms of communication that do not solve issues well when you are angry, upset, or emotionally down. I had my fair share in all this type of communications in the past.
TEXT MESSAGE (Short Messages Service - SMS).
When upset, you are free to key in your text message but do not send. Let it sit there for a night. Read the following day if you still want to send that text.
FACEBOOK PERSONAL MESSAGE, COMMENT or CHAT