Instead of using the proton mail app for calendar, have a dedicated proton calendar app for macOS.

In the meantime, or if this is not something Proton wants to pursue, I would appreciate a couple of changes to the proton mail app:
I would like to be able to pick which is the default view when the app is launched to calendar instead of mail.

I would also like to be able to two finger swipe left or right to be able to scroll back and forth between different weeks or months or days instead of just having the arrow buttons in the corners (or a keyboard command that goes to the next or previous one).

When creating events that have start and stop times, so not all day events, I would like to be able to click and drag an even down from the start to end time. This is already a feature, I would just like it changed to be able to do it across multiple days (as someone who routinely schedules something from 1900 one day through 0730 the next day)

I would like to be able to click on an event and then use the keyboard shortcut to copy the event, and then be able to use the keyboard shortcut to paste the event somewhere else.

I would like to be able to assign custom Hex colors to calendars.