Email
100

This is the name of the box where you type what the email is about.

What is the subject box?

200

This is the first thing you type when emailing a teacher.

Dear Ms. McCrary.. or Hello. Called a "Greeting."

300

You should always check this before pressing send on an email. 

What is spelling and grammar?

400

This comes at the end of the email, and usually includes your name and maybe your school name.

What is signature?

500

This is the box where you type an email address of someone you want to receive a copy of your email. 

What is the CC box.