The document that is part of a business letter is called attachment. It adds information within the letter or further describes it. When sending an attachment, include the word “attachment” on the bottom right side of the letter and a semi-colon after which the number of the attachment shall be written. Enclosure, on the other hand, is a document which is in addition to a business letter. It can stand alone, and thus, it is not necessary to explain in the business letter what the document is or how to interpret it. When sending an enclosure with the business letter, the letters “Enc” or the word “Enclosure” shall be written to the bottom left side, with a semi-colon. After this, comes the name of the document.
