The best Calendar alternative to Tuta Mail is Proton Mail, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Tuta Mail and 19 are Calendar Apps so hopefully you can find a suitable replacement. Other interesting Calendar App alternatives to Tuta Mail are Proton Calendar, Posteo, mailbox and Mailfence.
This secure email platform offers end-to-end encryption, a comprehensive suite with Calendar and Documents. Mailfence is inter-operable with OpenPGP services, features digital signatures, provides keystores, and available as a PWA for mobile independence while ensuring no ads, trackers, or surveillance.
Proton Mail provides secure email services with end-to-end encryption, ensuring data protection. Swiss-based and outside US jurisdiction, it offers a free version to champion privacy as a human right. Fully accessible on any device.
Does not allow IMAP/SMTP connections without paying.
I like the ecosystem Proton has created, it is far better
Your calendar is a record of your life. Proton Calendar helps keep it private.
Web- and IMAP-based email service. 2GB cost 1€/month. Information is hosted on encrypted hard drives. Electricity from renewable resources is used.
E-mail inbox, online office, cloud storage, and video conferencing. Business or personal plans. From 1 € /month (1.10 USD).
This secure email platform offers end-to-end encryption, a comprehensive suite with Calendar and Documents. Mailfence is inter-operable with OpenPGP services, features digital signatures, provides keystores, and available as a PWA for mobile independence while ensuring no ads, trackers, or surveillance.
Recently i switched from Tutanota to Mailfence, and i find them more secure and have more features. It goes without saying that Mailfence has an awesome Customer Support.
Fastmail offers secure email hosting with comprehensive webmail services, including IMAP, POP, and SMTP protocols. It supports file sharing, shared folders, large mailboxes, instant messaging, and is compatible with popular email programs. Excellent for businesses with compliance features.
Does not provide end to end encryption. Has stated that striving for privacy is largely theatre, when responding to criticisms of their use of US-based servers.
Vivaldi Mail is a free email service with no ads and no strings attached developed by Vivaldi Technologies. It also offers contacts and calendar features, search capabilities, folders management, WEB/POP/IMAP access, 10GB of storage capacity, 20 MB of maximum attachment size...
Calendar interface for CalDAV enabling cross-device event sync, web-based editing, recurring events, Nextcloud Contacts integration, WebCal subscriptions, attendee invites, color coding, event notifications, privacy-focused hosting, and import/export support.
Rainlendar is a feature rich calendar application that is easy to use and doesn't take much space on your desktop. The application is platform independent so you can run it on all major operating systems: Windows, Linux and Mac OS X.
fruux is a free service that takes care of your contacts, calendars and more so you don't have to. Never manually copy contacts and calenders between your devices again!
Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier, smarter and most importantly; secure.
Belgium
EU
Switzerland
Germany
Australia
Norway
France
Finland
Protonmail and Tutanota are both free services offering user-friendly encrypted email with a good set of features offered for free (and more on the way). Both enable you to send emails to other recipients (via PGP or a link) in a way that resists mass surveillance of the type Gmail, Yahoo! and Outlook are vulnerable to.