Albert Mehrabian stated in his theory that verbal communications have 3 components:
1) words,
2) tone of voice and
3) body language.

He stated that words stands for 7%, tone of the voice is 38% and body language is 55%.

Look at this example: “You are a smart man”, you may mean it or mean “you are supposed to be smart”, or “you are really stupid”, it depends on your tone and body language.

To properly interpreter his theory, apply it specially on emotional expressions, but words alone in factual expressions should express more than 7%.

If you feel a little angry, feel you don’t trust the other party, or the situation became ambiguous, it it better to hold a meeting for full bandwidth of communications.

If you feel greatly angry, stop doing anything and relax. don’t email, speak, or meet. Just do nothing and you can take a shower if possible. In extreme cases, you can do nothing and relax for a few days.