How to write an email?

Today our teacher told us the proper way how to write an email. She came up with this idea because she notice some email that sent to her during the lockdown. First she told us the different part of the email and some example of it. I think this is really helpful because sometimes I am making a mistakes about writing an email. We need to write an email to our parent and our form teacher

First thing, an email need to start by a greeting, there is a lot of greetings that you can use base on who is the person you are sending an email. Hello and hi is the most common greeting that we are using. Check in, this part is all about asking the person, you can ask how are they feeling, just to check them. And the most important one is the body on this part this is where you are saying the purpose of your email and why did you write it. The last thing that you need to put on you email is the salutation. This is the last part that you need to put on your email.