This command allows you to read your mails by opening the GUI, when you opened a mail, you can delete it only after claiming the attached attachments if there are any, if there aren't we still suggest you to read the contents first.

This command has a two parts that you can insert money into or items, if you put numbers, please know that that is the amount of money that you lose when the mail is sent, same for the amount of items.

But you can decide to put them as 0 to send nothing of that category. If you want to send an item, only one item type can be sent through the mailing system this way, but you can send up to a stack of said items to another player.