Please note that this section is for questions regarding the forum itself - it is not for fan game-related questions. If you have a question about a fan game, ask in the appropriate thread.
Welcome to PokéCommunity! Register now and join one of the best fan communities on the 'net to talk Pokémon and more! We are not affiliated with The Pokémon Company or Nintendo.
There should be little white square checkboxes on the right side of the messages in your inbox that you can tick, do that on all the messages you don't want anymore, scroll to the bottom of the page, click on the box that says 'move to folder', click on 'delete', then click on the box that says 'Go'.