The person relying on your answer needs the answer more than your perfect wording.

Waiting for the perfect phrasing keeps somebody in the dark. You draft the reply, reconsider it, set it aside to do properly later, and the person at the other end still cannot plan their day. In most cases they need the content and will forgive the wording without noticing. Delay reads as indifference even when it comes from care.

Send the plain version today rather than the polished one on Thursday. Two lines with the answer inside them beat a paragraph that never arrives.