Grammarly
Writing assistant that checks grammar, tone and clarity in Gmail, Outlook and most other apps, and can draft or rewrite replies.
- Free plan or free tier
- Works with Gmail
- Works with Outlook
Suggests rewrites of your sentences as you type in the browser, including in Gmail, to make them shorter, more formal or more casual.
Not enough info yet on works with Outlook, mobile app, developer API. Check the tool's own site.
Listing written by MailOverload, checked 2026-11-03. Report a correction or request removal. Back to reply writing and templates.