This is such a huge need. I have a business in a social services category being actively targeted by the US Government, and I need to be able to schedule with clients – organizations and individuals – in a way that is professional, easy for them, and low-stress for me. I left Google Calendar for obvious reasons when the US declared all LGBTQ+ people a "threat to national security," but I still need the functions of Calendly.

I see that Google Calendar has an appointment scheduling feature. It would be very cool to have that in Proton Calendar :)

The absence of this specific feature is a deal breaker for me. I really like Proton's apps and products, but a booking page is critical to my workflow.

Tested also with Vyte (https://vyte.in), but usability was an issue as well as privacy (>5 US-based tracking products always on).

Fully agree, we need something like this. The simplicity of Calendly combined with the privacy of Proton would be super helpful.

Requested information at some alternatives:

- Zeeg (https://zeeg.me): only through CalDav when available, untested whether bidrectional
- Meetergo (https://meetergo.com): through CalDav when available, untested whether bidrectional
- Calenso: no integration

It would definitely help a lot. We have Calendly and it's JavaScript deeply integrated in the onboarding of new customers. After switching to Proton, this has become a hassle in terms of the amount of labour needed to do it manually.

After further investigation, we have switched to cal.com.

With cal.com (open source and free and paid hosted versions, note US-based), you can retrieve events from the ICS feed (CalDav). The ICS feed is only read from.

However, since cal.com also sends an invite to the Proton mailbox, the item also appears in the Proton Calendar.

There were some minor issues. Most notable ones:

- some recurring calendar items had the wrong timezone in the ICS feed of Proton. Drop and recreate calendar item. Fixed.
- restrict number of calendar items in ICS feed of Proton. One with 15K items crashes. Solved by creating calendar starting at this year instead of using one with maybe 20 years of history.

Need a Scheduler for appointments with my clients to coach theme on buying supplies before attending my sewing classes.

I also would like to have this feature. Maybe as a snippet which I could embed into a website.

This is a huge hurdle for me moving completely to Proton. A scheduler is necessary with my work.