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(Outlook 2013) OST to PST (C# .NET)

Hi, Do you have any new information about support OST to PST conversion when we use *.ost files from Outlook 2013?

Are there any estimates on when the solution for this issue will be available?

Hi Albert,

Thank you for contacting Aspose support team.

The ost format in Outlook 2013 was significantly changed. There haven't been any open specification for this format yet that's why we don't have any opportunity to implement the support in the near future.

However, Aspose.Email still supports the OST formats for Outlook 2003, 2007, 2010 (because ost is actually a pst format for which there is an open specification).

Please feel free to write us back if you have any other query related to Aspose.Email.


Hi ,
Can you confirm that ost file of 2013 or 2016 version convertion is possible using aspose.email for java

@pradeepnegi,

I regret to share that support for OST 2013/2016 is unavailable in Aspose.Email presently. This is due to the difference in the structure of the data files, which is not described in the specification. Thus, any OST 2013/2016 file editing is not available in the Aspose.Email.