Email Etiquette

We have been working on email etiquette and I have learnt a few things. I have learnt that when writing an email, you need to write with proper and appropriate langauge and sign and proofread, be professional, use a solution, keep it to-the-point and give a specific subject. Having/showing manners is essential and shows that you are polite. Even when emailing you best friend, you must always use email Etiquette.