ICS Import
An .ics file is the universal calendar export format. Every major provider – Google, Microsoft, Apple, Proton – can export a calendar as .ics, and Cirrux can import it straight into one of your calendars. This is the simplest way to bring your existing events across when there’s no live sync available for your provider.
How it works
Export an .ics from your old calendar
Each provider tucks the export away in a slightly different place:
- Google Calendar– Settings → Import & export → Export (one .ics per calendar, zipped).
- Outlook / Microsoft 365– Calendar → Settings → Shared calendars → publish or export.
- Apple Calendar– File → Export → Export, per calendar.
- Proton Calendar– Settings → Calendars → export each calendar.
If you have a Google account, you can skip the manual export and let Google Sync keep your calendars mirrored automatically instead.
Upload it into Cirrux
Go to Settings → Workspace → Sync & Import, choose ICS file import, and select the .ics file. Pick which Cirrux calendar the events should land in – you can import into an existing calendar or create a new one for them.
What gets imported
All events in the file are added to the chosen calendar, including recurring events and their exceptions. Past events come across too, so your history stays searchable. For imported events, no emails will be sent to participants.
Re-importing
An .ics import is a one-time copy, not a live link – changes you make later in the old calendar won’t flow through. When uploading an updated file, we match on the unique event id and skip any events that are already in Cirrux.