English email format consists of several elements:1. Sender and recipient email addresses: At the beginning of the email, it is necessary to clearly state the sender's and recipient's email addresses. Additionally, carbon copy (CC) and blind carbon copy (BCC) addresses can be listed.2. Email subject: The email subject should be concise and informative, accurately summarizing the main content of the email.3. Salutation and body: The email should begin with a salutation, such as "Dear Mr. Smith," followed by the body of the email. The body is the core of the email, where the purpose and content should be expressed clearly, concisely, and specifically.4. Polite closing: After the body, an appropriate closing phrase such as "Best regards," or "Sincerely," should be used.5. Sender's personal information: At the end of the email, the sender's full name, title, department, address, phone number, and fax should be provided.When writing emails, it is important to not only follow the correct format but also to focus on communication efficiency. Adhere to the following seven principles: clarity, conciseness, specificity, accuracy, politeness, completeness, and thoroughness. Here are some commonly used email sentence structures:1. Opening section: - "The time flies, we haven't seen each other for a long time. All the things here are going on pretty well, I just miss you so much!" (Time flies, it's been a while since we last saw each other. Everything here is going well, I just miss you so much!)2. Middle section: - Offering suggestions: "In my humble opinion, you would be wise to take the following action:" (IMO, you would be wise to consider the following action:)3. Expressing gratitude: - "I can never thank you enough." (I cannot thank you enough.) - "It was kind and generous of you to do this for me, and I appreciate it more than I can say." (You were very kind and generous to do this for me, and I cannot express my gratitude enough.)4. Apologizing: - "Please accept my sincerest and deepest apology." (Please accept my most sincere and deepest apology.) - "I apologize for any inconvenience caused by my late reply." (I apologize for any inconvenience caused by my delayed response.)