The VPOP3 Status Monitor has several command-line options which can be used.
 
In general, you should use '/q /r', but other options are possible if desired. They are documented below

•/q - 'quiet' - don't show error if it can't connect

•/s:<server name> - connect to specified server name (from Status Monitor configuration)

•/o - open Status window at launch

•/r - load settings from user registry rather than VPOP3.INI in Windows directory (required when using the Status Monitor for later than Windows XP)

•/l - open VPOP3 settings on initial connection to VPOP3 (used by installer)