Guide to writing professional letters and email messages including format and layout, spacing, font style and size, salutations, closings and proofreading. Knowing how to write a letter is a fundamental skill you'll use in business, school, Three Methods: Sample LettersWriting a Formal LetterWriting an Informal. I presume that you are preparing for AISSCE , English(core). Formal letter. 1. Sender's Address. 2. Date. 3. Address of the. Already answered Not a question Bad question Other. Be sure that the purpose of your letter is clear. Write a formal letter when addressing someone you only know in a professional capacity. If you are writing in a Modified Block style, everything is formatted to the left except for the date and closing. Using a template is a great way to start your own letter writing format or email jump n because you are starting with the basic format in place. Write the name and address of the recipient. Help answer questions Start your very own article today.