AI Shortcuts for Slack Desktop on Mac
Select text in Slack, press a shortcut, and transform messages with AI - professional tone, casual rewrites, and more.
How It Works
Install Echoo
Download Echoo for macOS. It works system-wide, including in Slack desktop and browser.
Open Slack
Work in Slack as usual - channels, DMs, threads, or huddles.
Select and transform
Highlight text in the message field and press your Echoo shortcut (e.g., ⌥P for professional tone, ⌥J for casual tone).
Result appears
The AI-polished text replaces your selection right inside Slack.
Best Practices & Tips
Slack Desktop is where modern teams spend most of their communication time, and Echoo adds AI-powered message polishing that works natively within the Slack experience. The desktop app provides the best integration because Echoo accesses text through macOS accessibility without any Slack-specific plugins or bots.
The built-in Slack command in Echoo is specifically calibrated for workplace messaging. It strikes the right balance between professional and conversational, which is the signature tone of effective Slack communication. Unlike the Professional Tone command which can make messages too formal for Slack, or the Casual Tone command which might be too relaxed for work, the Slack command understands that workplace messaging has its own register.
For teams with different communication norms across channels, create channel-type-specific commands. A "Slack Engineering" command should be concise and technical for dev channels. A "Slack Leadership" command should be polished and clear for executive channels. A "Slack Social" command should be warm and casual for team social channels. Switching between these with different shortcuts lets you match each channel's culture instantly.
Slack Canvas is a newer feature where longer-form content lives alongside messaging. Echoo works in Canvas text fields just like message compose fields. Use the Professional Tone command for polishing Canvas documents, the To Markdown command for formatting pasted content, and the Summarize command for condensing long Canvas pages into key points.
For teams that use Slack for standup updates and async check-ins, create a "Standup Format" command that structures your update into clear sections: what you did yesterday, what you are doing today, and any blockers. This saves time on daily standups and produces consistent, easy-to-scan updates that team members appreciate.
OpenAI provides the fastest response times for Slack message polishing, which matters in real-time conversations. Google Gemini offers excellent quality on its free tier for teams with many Slack-heavy communicators. Both providers handle the short-form, conversational text typical of Slack messages better than providers optimized for long-form content.
Pro Tips
Use the dedicated Slack command instead of Professional Tone for workplace messages. It is specifically calibrated for Slack's unique tone between formal email and casual chat.
Create a "Standup Format" command that structures daily updates into yesterday/today/blockers sections for consistent, scannable async standup messages.
Create channel-type-specific commands: technical and concise for engineering channels, polished for leadership channels, warm for social channels.
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Frequently Asked Questions
Yes! Echoo works anywhere you can type in Slack - channels, DMs, threads, and even the canvas editor.
Absolutely. Assign different shortcuts to professional and casual tone commands, and switch between them depending on whether you're messaging your team or your manager.
No. Echoo runs independently via macOS accessibility, so it works alongside Slack AI without any conflicts.
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Ready to Try It?
Download Echoo for free and start transforming text with AI shortcuts.