Letters

Letters come in all shapes and sizes. They can take the form of a handwritten note on paper, put in an envelope and mailed using the old-fashioned postal system. They can be on the back of a postcard. But mostly, now, our written correspondence happens in the form of email, sent via the Internet. Letters and email can be very informal and chatty, written to friends and family, or more formal, written to a person you may have only met or communicated with briefly before, or they can be very formal, to a business or to an official in a government office, where you don't know the name, or don't wish to use the name of the person who will receive the correspondence.