For teams that write in Slack all day
NiceSpeak previews a calmer, more professional rewrite of your Slack message before it goes out — right in the composer. You read it, you decide, you send it. Nothing goes out that you haven't seen.
How it works
No hidden filtering, no silent edits. NiceSpeak only ever suggests — you accept or you don't.
Type your message in Slack the way you already do. NiceSpeak sits quietly in the composer and doesn't change anything until you ask it to.
Press Enter or click Corporate rewrite. NiceSpeak suggests a calmer, more professional version — side by side with what you actually wrote.
Accept the rewrite or keep your original word for word. Either way, sending is always your click, not ours.
Trust
This is a writing assistant, not a filter. It's here to help you say things well — not to decide what you're allowed to send.
NiceSpeak never sends on your behalf. Every rewrite is a suggestion you review — you click Accept or Keep original, every time.
Drafts are encrypted (AES-256-GCM) for the few minutes it takes to process them, then hard-deleted. Nothing sits around in plaintext.
No model-provider key is ever embedded in the extension or the app. Only our policy server talks to the model provider — your Slack workspace and the provider never touch.
Get in touch
We're not on the Chrome Web Store yet — for now, we set teams up by hand. Email us and we'll get you going.
hello@nicespeak.ai