Analyzes draft emails in Gmail/Outlook and shows tone indicators to prevent passive-aggressiveness.
Users
5
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#252K
#210K among extensions
Version
26.9.21.911
updated 21 Sep 2026
Users
monthly, 9 months
Latest, 15 Oct 2026:5 usersMove the mouse over the chart for any month
Ratings count
monthly, 9 months
Latest, 15 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Tone Mirror
In remote work, we often don't realize our emails sound curt or angry until it's too late. Without face-to-face interaction, tone can be easily misinterpreted, leading to:
Unintended conflicts with colleagues
Damaged professional relationships
Stressful work environments
Time wasted clarifying miscommunications
Tone Mirror analyzes your email drafts in real-time and displays a simple visual indicator in the corner of your compose window:
😊 Green = Friendly: Your message has a warm, positive tone
😐 Yellow = Neutral: Your message is professional and balanced
😠 Red = Hostile/Aggressive: Your message may come across as angry or passive-aggressive
Features
Real-time Analysis: Analyzes tone as you type
Non-intrusive: Small, unobtrusive indicator in the corner
Multi-platform Support: Works with Gmail and Outlook
Privacy-focused: All analysis happens locally in your browser
No data collection: Your emails are never sent to external servers
How It Works
The extension uses advanced pattern matching to analyze various aspects of your email:
Detects common workplace passive-aggressive language:
"Per my last email" - Implies recipient didn't read previous message
"For future reference" - Condescending instruction
"Just a gentle reminder" - Impatient follow-up
"Thanks in advance" - Presumed compliance
"Looping in [manager]" - Power move/escalation
"I was confused..." - Feigned confusion to criticize
"Great start" - Backhanded compliment
And 10+ more patterns
Word Choice: Detects potentially hostile or friendly language
Punctuation: Identifies excessive exclamation marks or ALL CAPS
Sentence Structure: Analyzes message brevity and abruptness
Overall Tone: Combines multiple factors with weighted scoring for accurate assessment