You may see a warning banner if the date and time settings on your device are more than a day in the past or future compared to the server time. Having the correct local time set is important for security features to work properly. Several important system services, as well as […]
Security requirements and recommendations for OpenPGP keys
We recommend you avoid using the following OpenPGP keys with ProtonMail: RSA keys shorter than 2048 bits ECC keys using a Brainpool curve or secp256k1 (as opposed to Curve25519 or a NIST curve): It is unclear if these keys will be standardized for use with OpenPGP. These curves also are not implemented […]
Subscribe to an external calendar
Proton Calendar allows you to add the calendars of friends, family, colleagues, and organizations that do not use Proton Calendar so you can keep track of all their upcoming events in one convenient and secure app. To add an external calendar, simply subscribe to its public address link. Regardless of your […]
Calendar status
Once you have created a calendar using one of your ProtonMail email addresses, you can begin using it to organize your plans. In Proton Calendar, all calendars will show a combination of the following statuses: Active Default Disabled Not synced. You can see the status of any of your calendars by logging […]
How do I upload my backup private keys?
ProtonMail uses PGP for end-to-end encryption. All users have at least one keypair, which consists of two keys: a public key and a private key. The public key can be shared with anyone and is used by your contacts to encrypt their messages to you. The private key is secret […]
Restoring encrypted events in your calendar
Password reset If you reset your password while using Single Password Mode, or if you reset your Mailbox password while using Two Password Mode, you will no longer be able to access the events saved in your calendar due to how we encrypt user data. This only happens when you […]
Guide to Proton Calendar for new users
Proton Calendar helps you stay on top of your schedule while keeping your data secure. You can access Proton Calendar on the web by going to calendar.protonmail.com and logging in with your ProtonMail credentials. Or you can log in to mail.protonmail.com and use the App Selector. Proton Calendar apps are […]
Temporarily cannot log in to Proton products
Proton’s security system defends our users from malicious actors seeking to gain unauthorized access to private data or compromise their accounts. When we detect substantial suspicious activity originating from a particular network or individual, we may temporarily take action to mitigate the risk to the user. In such cases, you […]
Automatic Update and Bridge
It is essential that you keep your software up-to-date. The latest version of an app introduces new features and fixes any bugs or vulnerabilities that were recently discovered, improving its security, reliability, and overall user experience. It’s no different with ProtonMail Bridge. Our development team releases new versions of Bridge […]
Proton Drive Beta FAQ
Proton Drive, now in beta, is our new end-to-end encrypted cloud storage service. To thank our users who enable us to pursue our mission of building an internet that puts users first, we are giving beta access to all Proton users with paid accounts. This includes users with: Lifetime plans […]