Learn how to write professional emails with the correct format , useful examples, and easy tips. Make your emails clear, effective, and attention-grabbing. Learn email writing in English with proper format , step-by-step tips, and sample emails for formal and informal communication. Improve your writing skills today! Here are some sample emails that will help you understand how to write an email in the best possible way. To: Recipient’s email address. Subject: Congratulations! Dear (Name), My heartfelt congratulations to you.