Outlook is the most popular email client. Users can easily export Outlook mailbox data using import/export feature. Sometimes, users face import export greyed Out issue in Outlook then they cannot export Outlook data. You can resolve this issue by upgrading Outlook Pro version, by Contacting the administrator, and by updating Outlook application. If you are not able te resolve this issue with these manual tricks then try Advik Outlook OST Converter tool on your system. The software can easily export Outlook mailbox data into various formats without facing any difficulty.