Detect Proton Mail
Proton Mail is the world’s largest secure email service with over 70 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.
Detection looks at dns records across 2 fingerprint rules among the site's public responses.
01
Websites using Proton Mail
Loading website list…
02
Signal classes
PluginView evaluates public page signals in these classes when identifying Proton Mail. Individual fingerprint rule bodies are proprietary and are not published.
- DNS records
03
Example public indicators for Proton Mail
Illustrative indicators derived from public catalog metadata for Proton Mail. A live scan may match additional proprietary rules beyond these examples.
- MX: .protonmail.ch
- TXT: protonmail-verification=
04
What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Proton Mail signature (2 rules) at the time of the scan.
- Does not establish
- A sitewide install of Proton Mail, an active vendor contract, exclusive use, or that Proton Mail is still in place today.
05
How to check a site for Proton Mail
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Proton Mail signals.
- 2. PluginView reads only public responses (dns records) and scores them against the Proton Mail signature set (2 rules).
- 3. Review the confidence score and text explanation for Proton Mail on the results page.
06
FAQ: detecting Proton Mail
- Can PluginView detect Proton Mail without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Proton Mail — typically dns records. It does not bypass authentication or paywalls.
- What category is Proton Mail?
- Proton Mail is classified under Webmail in the PluginView directory.
- How many fingerprint rules cover Proton Mail?
- This reference currently tracks 2 fingerprint rules across dns records. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses Proton Mail?
- Illustrative public indicators for Proton Mail include MX: .protonmail.ch; TXT: protonmail-verification=. A live scan may match additional proprietary rules beyond these examples.
