About & preview
Proton Mail is a public web app in Email, added as an example listing for the open web app directory. It is listed so IndApp can show a broader example catalog across social, productivity, media, shopping, education, travel, developer tools and browser games.
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How IndApp checked this app
We inspect public signals such as HTTPS, the web app manifest, icons and install behaviour. The trust level shows how far that check went. It is useful evidence, not a guarantee or endorsement by the app owner.
Current trust level
L3
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