---
title: "Subject lines"
description: "Write the body, and the subject writes itself."
url: "https://nextmail.sh/docs/knowledge/ai/subject"
area: "Knowledge base"
category: "AI"
status: "live"
---

# Subject lines

Write the body, and the subject writes itself.

## Details

- The sparkle at the end of the subject row, on a new message, opens Write a subject from the body, which reads what you have written and puts a short subject line straight into the field. The same menu rewrites a subject you already have: shorter, longer, rephrased, more formal or more casual.