Foxmail can build multiple mailboxes like the resource manager, which can be better for day-to-day mail management services. The way to build a multilevel mailbox in Foxmail is to start the Foxmail first and select the parent mailbox (such as the Inbox) where you want to create a child mailbox. When you execute the new Mailbox command on the Mailbox menu, a mailbox named "New Mailbox 1" appears in the Inbox, and the mailbox is executed. The "rename" command in the menu will be changed to the desired mailbox name when the Mailbox name window appears, and a similar method can be used to establish other multilevel mailboxes. This realizes the purpose of setting up a multilevel mailbox in Foxmail, and then it can be used to classify various kinds of messages.