When I create an appointment and invite a participant to it, the appointment is sent with the email address that is stored in NC in the basic settings.
This is nonsense. The email address that is stored with the user should be used, shouldn’t it?
Is this a feature of the calendar or a bug?
The server can’t send emails on your behalf without having your credentials, so it’s intended. Follow Calendar invites: Administrator shall choose if server's or user's email adress is used · Issue #5080 · nextcloud/server · GitHub