Add numbers to the messages in which the order it was sent in. First message would be 1 and last message would be up to you. I want this because I want to delete CERTAIN messages from my mail like important passwords and usernames. To delete certain messages, do /mail clear (number of message that was sent). To delete all messages, do /mail clear. The number of the message will be next to the message on the left. Example: 2. [cheese_ball_4] Can you remove this in /warp example? This is the 2nd message you ever gotten. Then do /mail clear 2 to delete this or do /mail clear to delete all.
This was already suggested. https://www.ecocitycraft.com/forum/threads/deleting-certain-messages-from-mail.159392/
Please do not tag me in repeat suggestions. I've already made my opinion known in the original. It's possible yes, but we have more important things.
In-game mail system isn't something we will work on. We have the forums for this, which have far better functionality.