Have a "delete all" option that actually deletes all of your messages
It's frustrating that you can only delete 10 messages at a time. When a post really catches fire there can be 100 messages by the time I check. I don't need to open each notification on the same post. I can just go to the post and read everything at one time. Each time I "select all" on a page and delete, the page becomes blank and I have to reload the page to delete the next 10. It is a multi-step process that takes upwards of 30 seconds to delete each set of 10 messages. Please either offer a delete ALL (literally), or make the existing function more convenient (fewer steps).