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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I've been pretty content with Fastmail. I use DAV5x to sync calendar, contacts, and tasks to the system data store and is available just if it was coming from the Google services. I can even setup the DAV5x source as an account in the Google Contacts and Calendar apps. I wish Fastmail would have separate apps instead of the single integrated one, though. And the calendar could stand to gain Maps integration. And I've replaced Google Tasks with Tasks.org.
Same with using Dav5x and tasks.org through Fastmail. And configuring the MX records was dead simple. In general it's been really convenient