English Letter Format Subject. The font size should be 10 or 12 points. This will make clear the purpose of the letter.
Signature / name of the sender; A subject line is not really necessary. The font size should be 10 or 12 points.
The paragraph or paragraphs in the middle of the letter should contain the relevant information behind the writing of the letter.
To format a formal business letter, start by typing your name, address, and today’s date at the top of the letter. Before beginning to write the letter you must state the purpose of the letter in one line titled ‘subject’. Use a plain font such as arial, times new roman, courier new, or verdana. When putting it together, often you are addressing a person or organisation with whom you are not familiar and the quality of your content, including spelling and grammar will be strongly scrutinised.