Does it work in Slack threads?

Yes, it works anywhere you can select text in Slack - messages, threads, channels, and DMs.

Can I customize the tone?

Yes! The Slack command is optimized for workplace messaging, but you can create custom commands for different tones.

Write Better Slack Messages on Mac with AI

Type a quick Slack message, press a shortcut, and send a polished version in seconds.

How It Works

Install Echoo

Download Echoo for macOS. It works in Slack desktop and browser.

Type your message

Write your Slack message naturally.

Select and transform

Highlight your message and press the Slack command shortcut.

Send polished message

Your message is rewritten to be clear, concise, and professional.

Commands for This Use Case

Slack

Rewrite as a clear, well-structured Slack message - concise, scannable, and easy to act on.

AnthropicHaiku 4.5

Professional Tone

Rewrite for professional context - emails, Slack, docs.

AnthropicHaiku 4.5

Casual Tone

Rewrite in natural everyday English that doesn't feel AI-edited.

OpenAIGPT 5.2

Frequently Asked Questions

Why I Built This

Since the AI revolution began, my workflow changed completely - but not entirely for the better. Here is why I built Echoo.

Explore More

Echoo vs Raycast AI

Compare Echoo and Raycast AI for text transformation on macOS. Free vs paid, privacy, features, and workflow differences.

Echoo vs Text Blaze

Compare Echoo and Text Blaze for text transformation. AI-powered shortcuts vs template-based text expansion on macOS.

Echoo vs Espanso

Compare Echoo and Espanso for macOS text productivity. AI-powered transformation vs rule-based text expansion.

OpenAI Integration

Connect Echoo to OpenAI GPT models for powerful AI text transformation on macOS. Use GPT-4, GPT-5, and more with keyboard shortcuts.

Anthropic Integration

Connect Echoo to Anthropic Claude models for thoughtful, nuanced AI text transformation on macOS. Claude Opus, Sonnet, and Haiku.

Google Gemini Integration

Connect Echoo to Google Gemini AI for free, fast text transformation on macOS. Gemini Flash Lite offers a generous free tier.

All use cases All comparisons For your role

Ready to Try It?

Download Echoo for free and start transforming text with AI shortcuts.

Cookie Preferences