Convert Entourage to Outlook 2010 - Version 4.0 No, Entourage emails cannot be opened in MS Outlook unless they converted into .PST format. Now the question we have here is how to Convert Entourage to Outlook 2010? Entourage offer by MS Office in Mac Mail and all its single emails are store in .EML format. Get the emails of Entourage in any Windows OS and then apply PCVARE EML to PST Converter software and using this program convert EML files into PST format or Convert Entourage to Outlook 2010. Convert EML files to PST format with all email elements such as – Metadata, Formatting, Attachments, Images, etc. Convert Entourage to Outlook 2010/2007/2005/2003/2000.