SECURITY REPORT · EXTENSHI SCAN
Tailmailer
Firefox extension·by Tailmailer
88
/ 100 SAFETY SCORE
EXCELLENT
Looks clean. No meaningful risks detected in this scan.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
Tailmailer's safety score vs every other extension we've scanned
Globally
60%of extensions carry more risk
Riskier ←→ Safer
Ranked against 415,509 extensions
In Privacy & Security
52%of privacy & security extensions carry more risk
Riskier ←→ Safer
Ranked against 12,615 privacy & security extensions
Findings
9
median 7Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
5
median 4Declared in manifest
Active users
1
median 3vs category median
Findings breakdown
Automated security signal · 9 distinct issues across 6 severities
9
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium667%
Low333%
Info00%
Permissions requested
2 risky permissions of 5 total
2 high-risk permissions require attention
This extension requests 5 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Access all HTTP sites
Can read and modify content on all non-encrypted websites
High
Access all HTTPS sites
Can read and modify content on all encrypted websites
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Write to clipboard
Can place content onto your clipboard
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Scan performed by extenshi.io · Aug 24, 2026
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