a personal letter is type of letter which provides communication between a small number of people, usually two. there are many type of personal letters and they are written for wide variety of reasons:
-one person wishes to get information from an individual or a business.
-one person wishes to make friend with and tell somebody about her/himself, as in pen pals.
-one person wishes to present to an individual or a business a social note, such as a thank-you or congratulation.
-one person wishes to communicate with an acquaintance-friend or family,for example in order to continue or strengthen the bond between them.