Your IMAP accounts are now created and cached in ost files. However, Outlook has changed this in later versions of the application. If you are using previous versions of Outlook such as Outlook 2010 or Outlook 2007 on your computer, cached content for your IMAP account is created in the pst file. The master copy of Outlook data is stored in the Outlook server, and a local copy of the cached data is created in your computer’s memory, called an OST file. The OST file on your computer memory is just the local copy or the cached copy of your Outlook data. Whereas, OST files contain cached files to use in cached storage for your emails. It means that PST files contain the actual data of all emails in your Outlook mailbox. The basic difference between PST files and OST files is their tangibility. The company STELLAR offers a multitude of solutions that you can consult by following the link:, moreover I had used EDB to PST Converter to recover data from an exchange 2013 on premise following a crash, I can tell you that it saved me sleepless nights. Save converted emails to MSG, EML, RTF, HTML or PDF formats.

Allows to search & save individual emails to OST files.

Support converting or encrypted OST file to PST file.

I present to you a tool which helps me in converting Outlook OST files to PST with recovery of attachments, contacts, calendars, etc.

Stellar ost to pst converter torrent