Thanks for pointing this out Aaron Rendell and Maciej Frydrych, there is also meanwhile directly a Outlook Action that can do this.
I would like to share this Microsoft Flow template with you all. I was used of creating manually to-do items (from an email out of MS Outlook) in a list on the Microsoft To-Do application. But this was really monkey work (Copy/Paste monkey work).
Adding this operation to the flow, we can set some advanced options:
Microsoft To Do is a task management app that helps you organize and manage your daily tasks and to-do lists. It is available for free on a variety of platforms, including the web, iOS, Android, and Windows. With Microsoft To Do, you can create tasks, set due dates and reminders, and organize your tasks into lists. You can also add notes and attachments to tasks, and mark tasks as complete when you're finished. Microsoft To Do integrates with other Microsoft apps and services, such as Outlook, so you can manage your tasks and appointments in one place. It is a useful tool for staying organized and keeping track of what you need to do.