How do I rewrite a message with AI?
Updated October 19, 2026
AI Rewrite improves a message you've already written: it makes it longer or shorter, changes the tone, or fixes mistakes. It works on every channel and in notes.
Step by step
- Open the conversation, click Reply and write your draft.
- Click AI Rewrite in the composer toolbar. In a narrow composer, it's in the More options menu (⋯).
- Pick what you want:
- Expand: adds a little detail, staying close to the original length.
- Shorten: removes repetition and keeps the key points.
- Rephrase: different words, same meaning and tone.
- More friendly: warmer and more casual.
- More formal: more professional.
- Fix grammar: corrects grammar, spelling and punctuation only.
- The composer shows AI rewriting..., then the new text replaces your draft.
- Read it, edit it if needed, and click Send.
Good to know
- AI Rewrite is greyed out until the composer has some text.
- The rewrite keeps the language you wrote in.
- It rewrites the whole message, not a selection, and returns plain text: bold, links and images in an email are not kept. Format the message after rewriting it.
- Nothing is sent until you click Send.
- If the rewrite fails, for example when your organization is out of tokens, an error message says why and your draft stays as it was.
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