Operating Systems - Windows 10, 8.1, 8, 7, Vista.
MS Outlook - MS Outlook 2019, 2016, 2013 (32 bit and 64 bit versions)/ 2010 / 2007/ 2003
Windows Server - Windows Server 2012/2008 R2/2008/2003 R2/2003
Exchange Server - Exchange Server 2019/2016/2013/2010/2007/2003/2000/5.5 and 5.0