If the Import/Export option is greyed out in Outlook 2016, it's typically due to administrative restrictions set by an Exchange administrator or a damaged Outlook profile. This limitation prevents direct data transfer within Outlook. As an alternative, using a professional tool like CubexSoft PST Converter can be highly effective. This software enables you to export, import, or convert Outlook PST files independently of Outlook's native features. It ensures secure migration of emails, contacts, calendars, and attachments while maintaining full data integrity, even when Outlook's Import/Export functionality is inaccessible.