Thank you for the opportunity to help you with your question!
It is usually important to know to whom you are writing and for what specific purpose you are sending an email communication due to the following purposes:
First is to know the "voice" that you will use.This takes the form of either a formal tone or a relaxed tone .In professional communication a formal and polite tone is used.
Second,is to decide on the style to adopt.If one is writing to a very busy person they should be belief and the message should convey the key message quickly and clearly.
Lastly it is important to know your audience to know what they will do with the information after receiving it.Will they make a decision based on it?this will guide you to know the amount of discussion to include in the email.
Please let me know if you need any clarification. I'm always happy to answer your questions.
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