Proton Calendar should allow users to save prefilled event templates and apply them with a single tap or click. Each template could store details like title, color, calendar, default start time or all-day setting, reminders, busy/free status, recurrence, location, and notes.

This would make it possible to instantly add common events (like “Workday,” “Day Off,” “Study Session,” etc.) without re-entering the same information over and over again.

It fits perfectly with Proton’s privacy-first model, since templates are just metadata that can be stored end-to-end encrypted.

This small addition would dramatically speed up event creation, reduce friction, and make weekly planning in Proton Calendar far more efficient.