Mailutil

The "mailutil" command is used to manage server-side related configuration (e.g., mailboxes, proof-of-work difficulty , etc)
The mailutil command houses various subcommands which are  listed below:

"mailbox" subcommand:
    "create" [NAME]:
          Create a new mailbox
          Example: "mailbox create foo"
    "list":
         List available mailboxes
         Example: "mailbox list"
    "rm" [NAME]"
         Delete a specified mailbox
         Example: "mailbox rm foo"