How to Import Multiple OST in Outlook PST File on Mac?

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July 21, 2025

As it’s frequently seen, various users find it very complex to save an OST file as a PST file on Mac OS. They regularly lose data, and the email attachments are not included in exported data. In this write-up, we’ll tell you how to import multiple OST in Outlook PST file on Mac OS device along with whole mailbox items as well as attachments. But before that, let us explain the Outlook OST and PST file formats.

OST is an Offline Outlook Data file which can be opened offline and synchronize change with the Exchange Server the next time they connect. MS Outlook apps use this type of file formats including IMAP, Outlook, Exchange, and O365.

PST (Personal Storage Table) is a file format utilized by Microsoft applications to save data such as contacts, tasks, calendars, journals, emails, and notes. PST files are saved in MS Outlook.

In the below section, let’s explain why it’s preferred to quickly import OST to PST on Mac Operating System.

Key Reasons for Importing OST to PST for Mac

Here are some important reasons to save OST file into PST file-

  • It’s easier to convert a PST database from one system to another system or place.
  • One can save storage by importing large offline OST messages in PST format.
  • If the email server crashes, the Exchange OST email may become unreachable, but one can open PST files from another or new MS Outlook profile.
  • When you migrate an OST file to a PST file, it’ll enable you to access your old files and recover any lost data if the mail account got corrupted.

Here, in the above framework, we’ve explained some of the main explanations why we should switch from Mac OST to PST. Now, let’s discuss the professional third-party solution to resolve the query “how to import multiple OST in Outlook PST file on Mac?”

Robust Mac OST to PST Converter for Converting Data from OST Mailbox to PST Folder

To convert, import, migrate, open, view, export, and save OST mailbox data to PST directly, we need a powerful and smart solution. So, here we’ll introduce you to an automated and independent solution. The name of this program is MacMister Mac OST File Converter. The tool successfully transfers OST messages to PST files without any data loss. This utility is known for its simple-to-use graphical user interface. Thus, home users can also utilize it without any difficulty or technical support. It also exports multiple OST files to PST, PDF, HTML, MBOX, vCard, ICS, CSV, EML, Thunderbird, Gmail, Yahoo, IMAP, Office 365, TXT, Outlook.com, and so on. Furthermore, this smart application smoothly works with a complete range of Outlook, Mac, and Win OS.

Benefits of Using Professional OST to PST Converter for Mac Tool

Here are some key reasons why users utilize an expert solution to successfully and directly convert OST file to PST file for Mac.

  • One can perfectly migrate the OST files into PST files including attachments, emails, tasks, journals, notes, calendars, and other items using the robust Mac OST to PST Tool.
  • The tool exports OST data to PST format without missing any data or email properties.
  • Through the use of this OST to PST for Mac Tool, a user can easily export the Outlook OST files to PST format in mass.
  • It is the most secure and ideal way to perform selective as well as bulk data conversion of OST to PST in one go.
  • The hierarchy of the OST files is accurately preserved during the migration procedure using the advanced solution.
  • It’s trustworthy and simple to use for both technical and home users.

Conclusion

You must try out this outstanding OST File Converter for Mac software and check out the free trial edition of the program. This trial pack can export a few OST files into a PST file for free. If you’re satisfied with the demo edition of the software, then you can purchase the licensed key of the tool. Bulk conversion of the offline OST files is done by the utility using the licensed key of the tool. As well, a 24*7 help service is also provided for the users who’ve some issues or have any doubt regarding the migration of OST email files.

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