Security - auto lock out of ProtonMail with timer limit.
In the browser when using ProtonMail, it'd be nice to have a timer that auto log-out or locks the access to the mail system after a predefined amount of time - also linked to Sleep status of the computer / smartphone system. This would limit accidental access to the mail system even if there's access to the physical hardware (=computer / smartphone).

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Scrambled Eggs commented
Totally agreed. I'm surprised this feature request does not have lots of votes. Isn't this a must-have feature, from a security point of view?
Why do I want this specifically: to be able to use the browser extension of Proton Pass it is necessary to be staying logged in to Proton Mail, Drive, etc. (But surprisingly not to the web app Proton Pass.) For me, this is a security issue. I don't want Mail and Drive to be opened all the time. -
chant48 commented
Agree with that. I would like the same feature than in Proton Pass.
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Anonymous commented
Agreed. Would like the option to lock the app on demand and to set a time limit for auto-locking. Would like to still receive notifications if an email is received while locked, but then unlock with password to access the app and read the email.