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

A. The subject line
B. The blind carbon copy (bcc)
C. The emoticons
D. The domain

I think the Answer is A, is that right?

I tend to agree, because based on the subject line I may or may not read the text itself. That also tends to make me decide if the thing is spam or not.

Yes, you are correct! The part of a professional email where you should aim to be brief but highly descriptive is the subject line, which is option A.

Yes, you are correct. In a professional email, you should try to be brief but highly descriptive in the subject line. This helps to clearly communicate the purpose or topic of the email to the recipient, making it more likely that they will open and read it.