"Thank you," "Have a wonderful weekend," "We value your business," or "Thank you for your time" are good closing phrases. You don't have to be too formal, but you also don't want to be too casual. Try to find a balance between the two. The subject of your email should always be written in the first sentence. This will give the reader context as to what they are reading and help them understand if it is relevant to them. For example, if the email is about a sale on shoes then the subject line can read "Shoes sold out!" This tells the reader that this email is not relevant to them but that there may be others that are so click through and look at those instead! In addition to the subject line, each paragraph should have a title word or phrase that summarizes the content of that paragraph. These titles help readers identify important information and ensure that they read every part of the email. Starting each paragraph with a title helps the reader focus on the key points within that paragraph instead of being distracted by the beginning of the next one. Finally, at the end of your email write a call-to-action (CTA). CTAs are words or phrases that tell readers what to do next.