Integration with
Proton Calendar

About Proton Calendar

Proton Calendar is a privacy-focused calendar app developed by the team behind Proton Mail. Proton Calendar helps you manage your schedule while keeping your data private and secure. Unlike traditional calendar apps that may monetize or share your data, Proton Calendar uses zero-access encryption, ensuring only you can access your event details.

Publish to Flatcal

Flatcal can subscribe to calendars published by Proton Calendar.

In Proton Calendar
  1. Log in to Proton Calendar.
  2. Click Settings → All settings → Calendars, then select the calendar you wish to share. Or you can click the Settings icon next to the calendar.
  3. Scroll to Share with anyone and select Create link.
  4. Choose what those sharing your calendar will see: Limited view or Full view.
  5. Proton Calendar will generate a URL link for your calendar. Click Copy link and share it.
In Flatcal
  1. Open your Flatcal Dashboard.
  2. Create or open Flatcal calendar that will use your public calendar as a source.
  3. Paste Proton Calendar public link into new Flatcal calendar source URL.

Subscribe to Flatcal

Flatcal publishes resulting calendar and Proton Calendar can subscribe to it.

In Flatcal
  1. Open your Flatcal Dashboard.
  2. Find and open Flatcal calendar that you want to subscribe to.
  3. Scroll to the end of your configured pipeline to Outputs.
  4. Copy the ICS URL with Copy button.
In Proton Calendar
  1. Once you have a calendar link, log in to the Proton Calendar web app and go to Settings → All settings → Calendars → Other calendars.
  2. Click on the Add calendar from URL button. This will open a new window where you will need to paste the calendar URL and click Add calendar.
  3. Proton Calendar will immediately create a new calendar, but it may take several minutes for all its events to show up.

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