Nói họ biết vì sao bạn lại viết email này. Trình bày điều bạn muốn nói trong vài đoạn. Tránh viết hoa cả đoạn hay cả câu hết mức có thể. Thỉnh thoảng đặt câu hỏi.

Given the above summary, write a detailed text in English for it.
Maybe you’re writing to see how their vacation is going, or to check in after an illness. Either way, start off your email by stating your purpose for writing. Say something like, “I heard you had the flu, and I wanted to see how you’re doing.” Now that you’ve finished your introduction, it’s time to get down everything you want to tell your friend. Break up big chunks of text into paragraphs of three or four sentences to make your email easier to read. You may want to use all caps to show your excitement, but it can seem like you’re yelling. Instead, use asterisks or bold your text to highlight the important parts. Ask questions related to what you’re saying. This shows your friend that you’re interested in their opinion, too. If you’re talking about your trip to the beach, you could throw in a question like, “Have you been down  to the beach yet this summer? If not, you should totally go.”