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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That would be lovely. There are few email clients available on fdroid and I've had issues with either anti features or getting the other ones to work with pop or IMAP.
Try FairEmail, but it doesn't seem to have ProtonMail supported out the box and I don't know or really care how to set it up.
I tried the actual email clients available on F-Droid because I host my own email server; so I am able to open up ports for mail to go in/out from my server. Half of the clients didn't even sync correctly with that (I've been configuring email for ages). I long for proton mail to offer me my backup email address on my phone.