**As an** OpenProject user
**I want to** avoid inadvertently marking all my notifications as read
**So that** I don't lose valuable information such as which work packages need my attention

**Acceptance criteria**

* In Notification center, when a user clicks on the 'Mark all as read' button:

* Show a Begin of the insertionconfirmationEnd of the insertion Begin of the deletion Danger WarningEnd of the deletion (the Begin of the insertionexact nature to be decided)End of the insertion Begin of the deletion simple variant that doesn't require confirmation)End of the deletion with the following text:

* Title: "Mark all notifications as read?"

* Body text: "This action is non-reversible. Please proceed with caution."

* Actions:

* Cancel (secondary)

* "Mark all as read" Begin of the insertion(primary)End of the insertion Begin of the deletion (danger)End of the deletion


**Technical notes**

* Begin of the insertion~~SeeEnd of the insertion Begin of the deletion SeeEnd of the deletion ##60588 for implementation notes. This feature requires the simpler variant to have been implemented Begin of the insertionfirst.~~End of the insertion Begin of the deletion first.End of the deletion

* Please use existing translation strings as much as possible.


**Permissions and visibility considerations**

* None