A correct letter format is a way of organizing written information in a letter that is accepted as appropriate; this varies by the type of letter being written and the purpose. Because there are many types of letters, there are different ways of formatting letters that are considered correct.
The correct letter format for an informal personal letter between acquaintances differs from that of a formal business letter between colleagues. However, regardless of the type of letter being written, correct letter formats typically share some features in common. All correct letter formats include a date, opening salutation, a body of information usually organized in paragraphs and a complimentary closing.