When someone important emails you without a subject line

Vogue editor Anna Wintour is reportedly known for sometimes sending emails without subject lines.

John Nacion/Variety via Getty Images

• Comedian Alison Leiby shared an email she once received from Vogue's Anna Wintour with no subject.
• Leiby said the lack of a subject line was stressful, but it was still "the best email" of her life.
• You might want to hold off on doing the same in your professional communications, experts told BI.

Alison Leiby remembers feeling...