Microsoft Outlook, in the offline (Cached Exchange) mode, saves all the Exchange mailbox data in a local file named OST file. The changes made by the user in the offline mode are later updated to the server mailbox when the Exchange connection is re-established. As the OST file resides on the user’s computer, it is unaffected by Exchange Server crashes and disasters, Exchange mailbox deletions, etc. So, Exchange administrators and end users can use OST files to restore user mailbox data in the occasions of such eventualities.
Try automated tool Kernel for OST to PST Converter to Convert OST File to PST, EML, MSG, Office 365, and Exchange.
There are multiple methods to convert any OST file into PST provided you can log in to Outlook with the same Exchange profile. Some native methods to convert OST to PST are presented here:
Login to Outlook with the Exchange account that was used to create the OST files. And to export the OST mailboxes to PST, follow the simple procedure:
Note: There is an optional choice to provide a password to the PST file, but you can easily move ahead without choosing it.
By enabling the Auto Archive method in Outlook, you will be able to save the items of OST file in a separate PST file. This method helps you to keep the size of your mailbox manageable. When the size of the mailbox grows and there are multiple messages that are older and you do not require them to be in the mailbox, then you can put them in the archive folder easily. Follow the simple steps to enable auto archiving in Outlook.
With this, mailbox items from your OST file will be saved to the PST file as per your archiving settings.
Kernel for OST to PST is a professional tool which can freely convert 25 items from each OST folder to PST. Its advantage is that it can convert offline OST files to PST without an Exchange profile or Exchange Server connectivity. It has a highly user-friendly interface which lets the user select OST file(s), recover items including the deleted ones, and convert them to PST format. Also, it can convert multiple OST files to PST at a time. Let’s see the working of the tool:
You can manually convert OST to PST only when you are using Outlook with the original Exchange account. But the software converts the OST into PST format even without the original Exchange profile and Exchange Server connectivity. Also, it provides many advanced filtering and saving options. Also, you can convert 25 items from each folder to PST for free.