Disroot.org
Free and Open Source Software
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Proton also uses proprietary apps and those apps are not without their share of problems.
Note that the web clients are all GPLv3: https://github.com/ProtonMail/WebClients
It's only the mobile apps of the auxillary services (drive, pass etc.) that are proprietary. And I don't get why either because it wouldn't hurt them one bit.
Their mobile apps aren't proprietary either:
Oh, indeed! They're under different orgs; that confused me.
Thanks.
p.s. To everyone out there. Remind me when the Proton mail app without Google push has landed in F-Droid.
So any web host that uses cPanel should be a good thing. IMAP for mail, Caldav for Calendars and Cardav for contacts. It's what I use anyway and haven't had any issues
Ok, duh, is cPanel the same as Roundcube?