Proton
Empowering you to choose a better internet where privacy is the default. Protect yourself online with Proton Mail, Proton VPN, Proton Calendar, Proton Drive. Proton Pass and SimpleLogin.
Proton Mail is the world's largest secure email provider. Swiss, end-to-end encrypted, private, and free.
Proton VPN is the world’s only open-source, publicly audited, unlimited and free VPN. Swiss-based, no-ads, and no-logs.
Proton Calendar is the world's first end-to-end encrypted calendar that allows you to keep your life private.
Proton Drive is a free end-to-end encrypted cloud storage that allows you to securely backup and share your files. It's open source, publicly audited, and Swiss-based.
Proton Pass Proton Pass is a free and open-source password manager which brings a higher level of security with rigorous end-to-end encryption of all data (including usernames, URLs, notes, and more) and email alias support.
SimpleLogin lets you send and receive emails anonymously via easily-generated unique email aliases.
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Yes, not being enable to integrate with the system both Linux and Android is what is bothering me the most.
But isn't this exactly what the Protonmail bridge is for? I don't use Proton myself (self-hosted Mailcow) but afaik Imap doesn't support public keys/PGP the way Proton is using it, hence one needs the bridge to use normal Imap clients like Thunderbird.
Sure, but this is only for mail, not even calendar. Also, they do not push on flatpak which limits availability.
Contacts cannot be synced on Android. Drive is nonexistent on Linux and I do not think it is a work in progress project yet. Drive cannot sync folders on Android either.
These are basic features...