Sound professional
in every Slack channel.
BetterSend adds an AI Improve button to Slack, in the browser and in the desktop app. Rewrite your message with the right tone (professional, concise, confident, or diplomatic) before you hit send.
Slack in the browser or the desktop app · Free forever · No credit card
See it in actionFree English rewriterWrite in your language. Send in theirs.
Mix Portuguese, Spanish, French, whatever comes naturally. BetterSend turns it into one polished message in the language you need.
Rewriting the same Slack message three times?
You draft a message to your team, delete it, and start over, unsure if it sounds rude, too casual, or just non-native. Your standups, async updates, and DMs all happen in English, even if it isn't your first language. BetterSend rewrites your draft in one click, right in the Slack composer.
A native app, not a browser tab
BetterSend runs inside the Slack, Microsoft Teams, WhatsApp and Discord desktop apps, on macOS and Windows. Same account, no browser in the middle.
- Slack
- Microsoft Teams
- Discord
The button in the composer
While you type in Slack, Teams, WhatsApp or Discord, a small BetterSend button appears next to the field. Click it, pick a tone, replace the draft.
Double-click a message
Double-click anything someone sent you to translate it or have it explained, right there, without leaving the conversation.
13 tones for every Slack situation
From diplomatic to direct, concise to warm, choose the tone that fits the conversation.
How BetterSend compares
Other tools translate text. BetterSend rewrites it like a native speaker would, inside the app you're already in.
| Feature | BetterSend $4.99/mo | Grammarly $12/mo | DeepL Write $8.74/mo | ChatGPT $20/mo |
|---|---|---|---|---|
| Works inside Slack, Gmail, WhatsApp, no copy-paste | ||||
| Writes inside the Slack, Teams, WhatsApp and Discord desktop apps | ||||
| Mixed-language input (write in PT, send in EN) | ||||
| 13 tones (Professional, Diplomatic, Confident…) | ||||
| One-click translation in the conversation | ||||
| Never stores your messages | ||||
| About $3.33/month on the annual plan |
Comparison reflects publicly documented features as of 2026. Trademarks belong to their respective owners.
Privacy-First by Design
BetterSend only runs when you click Improve or Translate. Your messages are never stored, auto-scanned, or sent anywhere without your explicit action.
Only runs when you click, never in the background
Messages are processed and never stored
No tracking, no scanning, no passive reading of your conversations
Frequently asked questions
You do not have to trust us
50 AI actions every month, free, forever. No card, no trial that quietly ends. If 50 better messages do not convince you, do not subscribe.
Write better on Slack starting today
Get the desktop app for macOS or Windows, or install the Chrome extension. Same account, the same 13 tones.