If you would be pungent, be brief; for it is with words as with sunbeams—the more they are condensed the deeper they burn.

Brevity is not a matter of politeness but of concentration. The same point spread over four paragraphs arrives diffuse and easy to set aside, while the same point in one sentence lands somewhere and stays. Length gives the reader room to look away; compression leaves nowhere to go.

Take whatever you are about to send and cut it by half before sending. Delete the throat-clearing at the start, the qualifications you added out of nerves, and every sentence that repeats an earlier one in different clothes. What remains will feel blunter to you and clearer to them, which is the trade you want.