Native Apps for Desktop and Mobile
To make the calendar far more accessible than the current state, native apps should be available for several platforms, both desktop and especially mobile. Currently, mobile devices cannot use Proton Calendar since there is no app or CalDAV support.

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Edward Ferrara commented
One more thing Integration to Postbox using a bridge tool - similar to Protonmail would probably be the best approach.
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Edward Ferrara commented
This is essential feature to enable real adoption of the calendar
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Pedro Gil commented
I'm pleased to use Proton Mail on my native desktop apps, nevertheless I'm dissapointed that I can only Share a view (no edit) of my calendar with my desktop apps using the public URL. Please consider either having a native desktop app or a IMAP/CalDAV/CarDav integration options, you'll make my day ;-)
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Robert commented
Yes I really want CardDAV, CalDAV, and IMAP with a local iOS “bridge” application just like desktop.
Too bad the mobile app doesn’t support any real ProtonMail specific features like mail filters. I still have to keep going to the web site to set up mail filters.
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Akseli commented
Being able to use the calendar with Kalendar or KOrganizer in Linux would be nice since it would integrate to my system really well. Any possibility this could be done with the ProtonMail bridge?
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Anonymous commented
Happy about the Android port, would love an additional Linux port
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Frankie commented
CalDAV support please!
The basic minimum I need is the ability to add Proton Calendar account in iOS -
Anonymous commented
I really need to go fuck n get my nut