~OLCommand :~RS dmail
~OLUsage   :~RS dmail <#>
~OL        :~RS dmail to <#>
~OL        :~RS dmail from <#> to <#>
~OL        :~RS dmail all

This command allows you to delete messages from your mailbox.  You can delete
specific single messages by supplying just a number, or from the first message
to a given number.  You can also delete from a certain message to another
message, or you can delete all your mail.
If a given number to delete to is higher than the actual amount of mail in
your mailbox, then all the mail will be deleted.