Is Protonmail Safe?
Protonmail — Nerq Trust Score 48.2/100 (D grade). Score based on 2 independent trust signals. Last analyzed: 2026-04-12
Protonmail is a website with a Nerq Trust Score of 48.2/100 (D), based on 3 independent data dimensions. Last analyzed: 2026-04-12 Security: 90/100. Popularity: 0/100. Data sourced from domain registration, SSL certificates, Tranco ranking, and web reputation databases. Last updated: 2026-04-12. Machine-readable data (JSON).
Is Protonmail safe?
Trust Score Breakdown — Protonmail has a Nerq Trust Score of 48.2/100 (D). Measured across 2 independent trust signals (as of 2026-04-12).
What is Protonmail's trust score?
Protonmail has a Nerq Trust Score of 48.2/100, earning a D grade. This score is based on 2 independently measured dimensions including security, maintenance, and community adoption.
What are the key security findings for Protonmail?
Protonmail's strongest signal is security at 90/100. No known vulnerabilities have been detected.
What is Protonmail and who maintains it?
| Author | Unknown |
| Category | Websites |
| Source | N/A |
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Safety Guide: Protonmail
What is Protonmail?
Protonmail is a website — Swiss encrypted email service by Proton AG. End-to-end encryption with Swiss privacy laws..
How to Verify Safety
Check domain age, SSL certificate, and security headers.
You can also check the trust score via API: GET /v1/preflight?target=ProtonMail
Key Safety Concerns for website
When evaluating any website, watch for: domain age, SSL validity, scam indicators.
Measured Signals
Protonmail has a Nerq Trust Score of 48/100 (D). This score is a composite of automated measurements of security, maintenance, community, and quality signals.
Key Takeaways
- Protonmail has a Trust Score of 48/100 (D).
- The score is a measured composite — it is not a suitability judgment. Evaluate the individual signals against your own requirements.
- Query the current measured values via the Nerq API.
Detailed Score Analysis
| Dimension | Score |
|---|---|
| Security | 90/100 |
| Maintenance | 50/100 |
| Popularity | 0/100 |
| Quality | 40/100 |
| Community | 35/100 |
Based on 5 dimensions. Data from domain registration, SSL certificates, Tranco ranking, and web reputation databases.
What data does Protonmail collect?
Protonmail: Swiss encrypted email service by Proton AG. End-to-end encryption with Swiss privacy laws.
Privacy score: 44/100. Review the privacy policy for data collection practices, cookie usage, and third-party tracking. Check for HTTPS encryption and transparent data handling.
Full analysis: Protonmail Privacy Report · Privacy review
Is Protonmail secure?
Security score: 90/100 (0-100, higher = fewer measured security issues).
Nerq monitors this entity against NVD, OSV.dev, and registry-specific vulnerability databases for ongoing security assessment.
Full analysis: Protonmail Security Report
How we calculated this score
Protonmail's trust score of 48.2/100 (D) is computed from domain registration, SSL certificates, Tranco ranking, and web reputation databases. The score reflects 5 independent dimensions: security (90/100), maintenance (50/100), popularity (0/100), quality (40/100), community (35/100). Each dimension is weighted equally to produce the composite trust score.
Nerq analyzes over 7.5 million entities across 26 registries using the same methodology, enabling direct cross-entity comparison. Scores are updated continuously as new data becomes available.
Signals last measured on April 12, 2026. Data version: 1.0.
Full methodology documentation · Machine-readable data (JSON API)
Frequently Asked Questions
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Disclaimer: Nerq trust scores are automated measurements based on publicly available signals. They are not endorsements, verdicts, or guarantees of suitability. Always evaluate the signals against your own requirements.