The current appointment scheduling feature in Proton Calendar is not yet a full replacement for tools like Calendly or TidyCal. Several important functionalities are missing.

1. Limited Booking Form Fields

Currently, the booking form only includes:

Name
Email address

Missing features:

Address details (street, city, postal code)
Phone number
Booking subject (ideally with predefined selectable options)
Free text field for additional information

These fields are essential for collecting relevant client information before appointments.

1. Display of Organizer Email Address

The booking page automatically displays the organizer’s Proton email address.

Issue:

I use a custom domain email for my practice.
My private Proton email address should not be visible.

Suggested improvements:

Allow users to choose which email address is displayed
Option to hide the email address completely

1. Missing Website Integration Options

Currently, only a booking link is available.

Missing feature:

Embed code for integrating the booking page directly into websites
Conclusion

While the feature is a good start, it lacks several important capabilities that tools like Calendly or TidyCal already provide. Enhancing these areas would significantly improve usability and make Proton Calendar a more complete solution.