I'm not trying to be patronizing here, so I'm sorry if that's how I come off, but did you try opening each message individually and pressing the delete button?
Hi I have a huge problem with the mail of dragon ball online
I got 30 messages and the box is full, and try to update the email, change, and nothing the email, channel are not and can not ERASE
I guess this happened to more than one person : Sad:
I sent a message to the Chinese to deport my bug, but nothing helped me an : Cry:
PLEASE IF THERE A PATCH OR SOMETHING THAT CAN HELP ME : Cry:
I think you sold a bunch of random items and then after 24hours they got sent back to you and you are just trying to delete but you need to take the item out the mail first then delete.