Is there a version of MAPI Acessor supporting Outlook 2010 64-bit?
No, there’s no such version and we do not plan to add support for Outlook 2010 64-bit in the near future. If your add-in is loaded in Outlook 2010 64-bit, we suggest that you use the PropertyAccessor Interface introduced in Outlook 2007; for more info please see PropertyAccessor Object. In case you run into restrictions of that interface (see Dont stumble over a stone working with the PropertyAccessor and StorageItem classes in Outlook 2007), you will have to dwell into Extended MAPI, see Outlook 2010 MAPI Reference and Outlook 2007 MAPI Reference. If none of the options suggested above will work for your project, an alternative would be to use the Outlook Redemption 5.0 library. Redemption is a MAPI wrapper implemented via COM interfaces available for use with any programming language. It duplicates and extends the functionality offered in the Outlook Object Model and CDO (Collaboration Data Objects) and supports installations of 64-bit Outlook. You can purchase a license here.
