An OST file (.ost) is an offline storage table file in Microsoft Outlook. Offline folders make it thinkable for the user to work offline and then to synchronize changes with the Exchange server the next time they connect. The ability to work offline is useful in environments with limited or unreliable connectivity.

What is Microsoft Outlook OST file?

It is produced by Microsoft Outlook (2005 or later), an email client and personal information manager. It is used to stock a copy of mailbox information from an Office 365, Exchange, or account.

OST files may contain email messages, contacts, tasks, calendar data, and other account information. OST files are stored on the local computer of a user, which permits the user to access his emails and other mailbox information when he does not have Internet access.

Convert OST file into PST using Vartika OST to PST Converter

For accessing OST file into PST Outlook in an easy manner Vartika Software launched OST to PST Converter. It is integrated with various new features and capabilities to convert the unlimited size of OST file into PST (ANSI and UNICODE).

The OST to PST Converter gives you the facility of preview emails before actual conversion. It also gives you the option to convert single and multiple emails from OST file into multiple formats.

Vartika OST to PST Converter has a trouble-free process to convert OST file into PST, EML, MSG, HTML, PDF, MBOX, EMLX and Other formats. By taking advantage of Vartika OST to PST Converter you can convert entire mailbox items as such-

inbox items, sent items, outbox, draft, junk mails, contact, calendar, task, notes, journals, appointments, zip attachments and embedded images etc. The OST to PST Converter effectively Import OST to Office 365 and Live Exchange Server.

The OST to PST Converter is Windows based utility which easily works with all Windows editions up to 10 as well as compatible with Outlook versions from 97 to 2019.

Process for converting OST to PST

Step 1- Install Vartika OST to PST Converter


Step 2- Browse OST file and if the location is unknown then click on Search OST file button


Step 3- Rebuild OST file structure


Step 4- Preview of OST Emails


Step 5- Extract Message Information


Step 6- Showing OST Message List


Step 7- Click Export Option to select formats


Step 8- Import OST to Office 365 and Live Exchange Server


Step 9- Saving Process has been completed