Instead of the default from address being the user running the form, I would like to use a shared mailbox. My problem is that the whole tenant makes use of this form (around 300 users) and manually giving send as delegate permissions on the shared mailbox is not a good idea. I also need to to make sure new users are added as send as delegates to this shared mailbox so that they can run the form, this will require too much manual intervention.
Is there another way to achieve this without power automate?