extenshi.io
SECURITY REPORT · EXTENSHI SCAN

ProtonMail: No Default Sender

Firefox extension·by Brooks
92
/ 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

ProtonMail: No Default Sender's safety score vs every other extension we've scanned
Globally
67%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 403,022 extensions
In Appearance
31%of appearance extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 18,943 appearance extensions
Findings
6
median 3Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
1
median 2Declared in manifest
Active users
1
median 3vs category median

Findings breakdown

Automated security signal · 6 distinct issues across 6 severities
6
distinct issues
detected

Permissions requested

1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Info
https://mail.proton.me/*

No additional information available.

Are you the author of ProtonMail: No Default Sender?

Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.

Claim this extension

Add the badge to your README

Show ProtonMail: No Default Sender's live security score on GitHub or in your docs
Extenshi security score badge preview
Markdown
[![Extenshi security score](https://catalog.extenshi.io/api/badge/110331)](https://catalog.extenshi.io/extensions/110331/security)
HTML
<a href="https://catalog.extenshi.io/extensions/110331/security"><img src="https://catalog.extenshi.io/api/badge/110331" alt="Extenshi security score" /></a>

The badge always shows the current score — it updates automatically after every scan.

Scan performed by extenshi.io · Aug 24, 2026
Browser extensions made transparent.