Premising there are many wrong reasons for mutating a person,
There are several legitimate reasons for mutating a person. One of them is this use case:
* I have an account `foo.yeah` used for volunteer reasons, but also an account `name.surname.nice-organization-name` used during working hours activities.
* Ideally, the user `foo.yeah` should be able to mute `name.surname.nice-organization-name` to avoid to receive self-actions during working time
* Ideally, the user `name.surname.nice-organization-name` should be able to mute `foo.yeah`, to avoid to receive self-actions during volunteers time
A way to implement this is:
[ ] Introduce an option {nav Muted Users} in the Config page somewhere
[ ] Modify the current Mail and Notification system to skip that notification if it comes from a Muted user