Letter Writing is one of the simplest things to learn! But most of us forget that this is not about writing a single letter only. This Simple-Special Art of Communicating the 'Persuasive' content demands precision, accuracy and care.
Official Communication is done through Inter and Intra-Office Communication Tools. Notice, Circular and Memo are the Intra-Office (Within the organisation) tools. Letters come in the Inter-Office Communication category.