The Status bar within VPOP3 webmail displays important information at a glance.

User - At the far left, is a display to let you know which user is currently logged in.
Version - After the username, there is an indication of the current VPOP3 version. Since version 5.
Progress - Towards the right, is a blue bar to let you know that VPOP3 is currently trying to load something.
Message totals - At the far right, is a display to let you know how many messages are available in the active mailbox. For example, 2/1906 means that there a total of 1906 messages in the active mailbox, of which 2 are marked as unread.