Question

In which part of a professional email should you try to be brief, but highly descriptive?

Answer 1

Subject of the email should be brief my being highly descriptive

Answer 2

An email has three major parts;

1) Subject

2) Mail body

3) Attachment

Among these three parts of an email,the mailbody is the most descriptive part of the total email.

We describe the subject for the recipient of that specific email.

For a better clarification of the subject the mail body should be descriptive and brief.