[ From official announcement in protonmail subreddit ]

Hello everyone,

Starting today, you can test the search feature in the beta version of the Proton Calendar web app.

This feature will allow you to easily find the events you’re looking for while keeping your schedule private.

Search is made possible by creating and storing a local index of your events on your device.

This ensures that Proton doesn’t see the details of your events.

To try it out, make sure that you have joined the Beta.

Do this by opening the Proton Calendar web app, and enabling Beta access in the settings menu.

You can learn more about this feature here: https://proton.me/support/calendar-search

Search was one of the most popular Calendar community requests, and we’d love to hear your feedback about it!