Business letters should be brief and to the point. The best letter
states clearly all the facts in the fewest words. Brevity is not
inconsistent with a long letter, as so much may need to be said as
to require a long letter, but all repetitions, lengthy statements and
multiplication of words should be avoided. Use short sentences, and
make every word mean something. Short sentences are more forcible, and
more easily understood or remembered, than long drawn out utterances.