Pinterest is a great way to collect and share images, but it can be frustrating to deal with notifications for old pins. In this article, we’ll show you how to delete old notifications on Pinterest. First, open the Pinterest app on your phone. Next, go to the main menu and select “Settings.” Under “Notifications,” select “Old Notifications.” You’ll see a list of all the pins you’ve followed in the past. To delete a pin, tap on it and then select “Delete.” ..