After *THE GREAT DM INCIDENT OF JANUARY 18, 2023*, I cleared local storage on my browser. This meant that I had to open up hundreds of DMs and scroll down through them, marking them all as read. I nicely complained in Snort's Telegram and wished that this feature existed, because it was going to take me a very long time to go through all of these. Kieran is amazing and implemented this feature just now.