    # File lib/vmail/imap_client.rb, line 546
        def move_to(uid_set, mailbox)
          uid_set = uid_set.split(',').map(&:to_i)
          decrement_max_seqno(uid_set.size)
          log "move #{uid_set.inspect} to #{mailbox}"
          if mailbox == 'all'
            log "archiving messages"
          end
          if mailbox_aliases[mailbox]
            mailbox = mailbox_aliases[mailbox]
          end
          create_if_necessary mailbox
          log "moving uid_set: #{uid_set.inspect} to #{mailbox}"
          spawn_thread_if_tty do
            log @imap.uid_copy(uid_set, mailbox)
            log @imap.uid_store(uid_set, '+FLAGS', [:Deleted])
            reload_mailbox
            clear_cached_message
            log "moved uid_set #{uid_set.inspect} to #{mailbox}"
          end
        end