Mailstrong icon

Mailstrong

by caleb.sylvest · Privacy & Security
Manifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Intercepts external links in Gmail to prevent accidental phishing clicks

Users
15
−1 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#166K
#138K among extensions
Version
1.0.0
updated 25 Nov 2025

Users

monthly, 11 months
0815Nov 2025May 2026Oct 2026
Latest, 15 Oct 2026: 15 usersMove the mouse over the chart for any month

Ratings count

monthly, 11 months
001Nov 2025May 2026Oct 2026
Latest, 15 Oct 2026: 1 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 Mailstrong

Mailstrong - Your Shield Against Phishing STAY SAFE FROM PHISHING ATTACKS Mailstrong adds a crucial security layer to your Gmail inbox. Before any external link opens, you'll see a detailed confirmation modal with security information, giving you time to verify the destination and make informed decisions. KEY FEATURES ✓ Link Interception • Automatically detects and intercepts all external links in Gmail emails • Shows a clear confirmation modal before opening any link • Prevents accidental clicks on phishing or malicious links ✓ Security Insights • Displays full URL and domain name prominently • Highlights HTTPS vs HTTP security status • Warns about suspicious patterns (IP addresses, unusual characters, very long URLs) • Helps you spot phishing attempts before it's too late ✓ Smart Actions • Open Link - Proceed to the destination in a new tab • Cancel - Close modal without opening the link • Copy URL - Copy the link to clipboard for verification in security tools • Whitelist - Add trusted domains to skip future confirmations ✓ Link History • Review the last 50 intercepted links • See what you opened vs cancelled • Track timestamps and security status • Useful for security audits and incident review ✓ Statistics Dashboard • Track total links intercepted • See how many suspicious links you've blocked • Monitor HTTP vs HTTPS ratio • Identify most common domains • Quantify your security improvements ✓ Customizable Settings • Whitelist trusted domains to skip confirmations • Toggle history and statistics tracking • Enable/disable the extension with one click • All settings sync across your Chrome browsers PRIVACY & SECURITY • 100% local processing - no data sent to external servers • No tracking or telemetry • No personal information collected • All data stored locally on your device • Open source code available for review PERFECT FOR • Professionals handling sensitive information • Anyone who receives emails from unknown senders • Security-conscious individuals • Corporate users needing audit trails • People who want to understand their email threat landscape HOW IT WORKS 1. Install the extension 2. Open Gmail as usual 3. When you click an external link, a modal appears 4. Review the URL and security information 5. Choose to open, cancel, or whitelist the domain 6. Track your activity in the Statistics and History tabs LIGHTWEIGHT & FAST • Minimal performance impact • No Gmail slowdown • Instant modal display (<100ms) • Small memory footprint MADE FOR GMAIL Specifically designed for Gmail's web interface (mail.google.com). Works seamlessly with Gmail's dynamic content loading. UPCOMING FEATURES • Domain reputation checks • Enhanced threat detection • Export statistics reports • And more based on your feedback! Need help? Have suggestions? Contact us through the support link. Stay safe online! 🛡️

Growth

WindowUsersChangeRatingsRating
7 days+3+25.0%00.00
30 days−1−6.2%00.00
6 months+8+114.3%00.00

Version history

1 versions recorded
1.0.025 Nov 2025

Details

Category
Privacy & Security
First seen
25 Nov 2025
Size
22 KB
Languages
en
Pricing
Free
Privacy policy
github.com
Support
github.com
Extension ID
jlkffelfgcbialfnamfjdmkinfgeappm

Permissions and risk

Moderate riskimpact 2, likelihood 2
Permissions
storageactiveTab
Site access
https://mail.google.com/*

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