There are many parts of a business letter. Every business letter should follow the structured format in order to incorporate all the salient features of an effective business letter. Every business letter will contain various parts. Few of them are required while few others are only optional. There is no cut and right rule that every business letter should incorporate all these parts. You have to use your common sense to decide what are the parts which should be used and what are the parts which should be left in your proposed business letter. Use the formal and regular method so that reading your business letter will be easy for the addressee.
Here are those parts of an effective business letter.