72% of leaders say tone matters most
Fix it before you send. Flat pricing from €10/month
Based on workplace communication research: CPP Global, Grammarly & Harris Poll
AI Disclaimer: Tone uses AI technology to analyze messages and provide suggestions. While we strive for accuracy, AI-generated responses may contain errors or inaccuracies. Please review all suggestions carefully before sending messages, as Tone is not a substitute for human judgment.
Research shows that text messages are fundamentally different from spoken communication—and that's why tone gets misunderstood.
In face-to-face conversation, we rely on non-verbal cues to understand tone:
In text messages, all of these are missing. Without these cues, people compensate with "textisms"—punctuation, spacing, capitalization, emoji—but these can be misinterpreted, especially by people who don't know you well.
People tend to read neutral or ambiguous messages more negatively than intended—especially when they feel uncertain or don't trust the sender. In professional settings, matching emotional tone significantly affects satisfaction and communication outcomes.
Source: Communication research, ScienceDirect 2025
About 18% of misinterpretations occur when receivers miss playful or sarcastic intent in text messages. These subtle cues are the most challenging to convey and interpret accurately.
Source: Computers in Human Behavior Reports, ScienceDirect 2025
Misunderstood tone leads to conflict, hurt feelings, and damaged relationships. In professional settings, it affects collaboration, trust, and career growth.
These are the most common tone issues that lead to misunderstandings in workplace communication.
❌ Problematic:
"I guess if you have time, maybe you could look at this. No rush though."
✅ Improved:
"Could you review this by end of day? Let me know if you need more time."
Why it's problematic: Passive-aggressive messages create confusion and resentment. The recipient senses the underlying frustration but can't address it directly.
❌ Problematic:
"I already explained this. Did you even read my last message?"
✅ Improved:
"Let me clarify: [restate key point]. Does this help?"
Why it's problematic: Defensive messages escalate conflict instead of resolving it. They make the recipient feel attacked and less likely to collaborate.
❌ Problematic:
"We should probably discuss this."
✅ Improved:
"Let's discuss the Q4 budget. Can we schedule 30 min this week?"
Why it's problematic: Vague messages create uncertainty and require back-and-forth clarification, wasting everyone's time.
❌ Problematic:
"Per your request, please find attached the document. Kindly review at your earliest convenience."
✅ Improved:
"Here's the document you requested. Let me know if you have any questions!"
Why it's problematic: Overly formal language in casual channels like Slack can come across as distant, unfriendly, or even sarcastic.
Your team's privacy. Your manager's peace of mind.
Managers pay for the workspace. Everyone gets better at communication. Nobody gets monitored.
Tone analysis helps you communicate more effectively by catching problematic language before you send—reducing conflict, improving collaboration, and building stronger workplace relationships. Get real-time feedback on passive-aggressiveness, defensiveness, and unclear messaging.
Get instant feedback before sending. AI-powered analysis detects passive-aggressiveness, defensiveness, and unclear communication.
Intelligent recommendations powered by Google Gemini and Anthropic Claude to improve clarity and professionalism.
Considers channel context, recipient info, and thread history for personalized, relevant feedback.
Only YOU see your analysis. No surveillance, no reporting. Messages analyzed in real-time, never stored.
Monitor improvement over time with personal stats and insights to identify growth areas.
Perfect for non-native speakers. Ensures correct tone and catches cultural nuances in translation.
Click "Add to Slack" to install Tone to your workspace
Grant Tone permission to analyze and suggest improvements
Run `/tone Your message here` or use "Analyze tone" shortcut
Review suggestions and send your improved message confidently
See Tone in action: Real-time tone analysis directly in Slack
One flat price for your entire workspace. No per-user fees. Unlimited messages for all team members.
10 tone checks/month
€0/month
Perfect for trying out Tone
1-5 users
€10/month
Unlimited usage
6-15 users
€39/month
Unlimited usage
16-30 users
€89/month
Unlimited usage
31-50 users
€149/month
Unlimited usage
50+ users
€249/month
Unlimited usage
✅ 14-day free trial • ✅ Unlimited messages • ✅ Cancel anytime
Tone analysis is just the beginning. We're building toward a comprehensive conversation and negotiation assistant for written communication.
Help you write messages that focus on interests, not positions. Suggest win-win language and collaborative phrasing that leads to better outcomes.
Prepare for challenging discussions with calibrated questions and emotional intelligence techniques—proven methods from world-class negotiators, adapted for written communication.
Built specifically for written communication—where tone is harder to control and misunderstandings are more common than in face-to-face conversations. We're bringing proven negotiation and communication frameworks into the digital age.
No. Never. Only you see your tone analysis and usage. Managers pay for the workspace subscription, but they only see their own personal usage—just like everyone else on the team. No reporting. No surveillance. No individual tracking.
Why we built it this way: Communication improves when people feel safe to learn. The moment it becomes surveillance, trust disappears and the tool stops working.
Tone analyzes messages in English, German, Spanish, French, Italian, Portuguese, and more (powered by multilingual AI models). It's especially helpful for non-native English speakers who want to ensure their tone comes across correctly when communicating with international teams.
Slack doesn't analyze tone. We integrate directly into Slack via the `/tone` command, giving you real-time analysis before you hit send. Think of us as a communication coach that helps improve your message tone in real-time.
No. We analyze your message in real-time and immediately discard it. We only store aggregated statistics (like "you checked tone 5 times this week")—never your actual message content. Your messages are sent to AI providers (Claude or Gemini) for analysis and automatically deleted from their systems within 7-55 days per their retention policies.
Grammarly is excellent for grammar, spelling, and writing polish across documents and emails. We're laser-focused on improving message tone in Slack—helping you communicate more effectively in real-time team conversations.
| Feature | Grammarly Business | Tone |
|---|---|---|
| What it does | Comprehensive writing assistant | Tone improvement in Slack |
| Best for | Documents, emails, all writing | Real-time team messages |
| Privacy | Individual accounts | Manager pays, team stays private |
| Price (50 users) | ~€750-1,250/month | €149/month |
| Focus | Grammar + tone + style | Message tone in Slack |
Think of it this way: Grammarly = Your writing editor | Tone = Your communication coach. Both are valuable. We're not competitors—we solve different problems.