Hi NinarosaJuffermans!
The following table shows the types of notifications you’ll receive, the activities that triggers them, and where you can change the setting.
For more details, you can refer to:
https://support.microsoft.com/en-us/office/stay-on-top-of-tasks-and-plans-with-email-and-notifications-cce223d6-b0ae-43cf-a080-266e2414a859?ui=en-us&rs=en-us&ad=us