You've to try MacMister OST to Office 365 Migration Tool to move an OST file to Office 365 account with emails, contacts, tasks, notes, etc. Mac OST Converter is the best and expert solution to convert multiple OST files into M365 at a time on macOS. The software comes with a free trial version which converts the 25 items from each loaded folder without cost.
Download For Free- https://www.macmister.com/ost/

Go with MacMister Mac OST to PST Converter Software to open OST files data to PST, PDF, EML, MSG, MBOX, DOC, HTML, vCard, ICS, Gmail, Office 365, Yahoo, IMAP, etc. It transfers all OST mailbox data like contacts, calendars, emails, notes, and other details without Outlook installation. Because of its simple to use interface, even home users can use this utility. The free trial pack of the program converts a few items from OST data.
Download for Free- OST Converter for Mac

Convert Outlook OST file to PST file with MacMister OST Converter for Mac & Win OS Tool. It's a very amazing and perfect app that allows users to move their bulk Outlook OST emails, notes, tasks, contacts, calendar, and more items at once without trouble. Try the free trial version of this program and convert 25 mailbox items from each loaded folder for free.
For More Details- https://www.macmister.com/blog/convert-ost-to-pst-without-outlook/

Everyone can easily convert OST to PST without Outlook with the help of MacMister Mac OST Converter. This app can export single as well as bulk OST emails, calendars, notes, and other items into PST format in a single round without difficulty or data loss. It offers a user-friendly GUI interface for moving data without any technical help. It is compatible with both Mac & Win operating systems.

You don’t need to search further if you’ve a MacMister Mac OST Converter Tool. This advanced solution migrates bulk OST files into PST format without Outlook. The OST to PST Converter supports all Outlook, Mac OS, and Windows OS versions. Users don’t need any technical information for its operation. This app has various features using which you can convert the data without any trouble or problem.

You can try the best MacMister OST Converter for Mac Software that is very amazing solution to change OST file to PST. This software simply convert OST file to other format like as MBOX, MSG, HTML, PDF, vCard, Thunderbird, Office 365 , Gmail, etc. This software is support all the versions of Outlook, Mac and Window OS. For both expert and non-technical users, it offers a simple GUI interface. To convert a few items/folder, download the free demo version of Mac OST to PST Tool.

If you’re looking for professional solution to convert OST files to PST on Mac then, you can go with MacMister Mac OST to PST Converter. It is the best solution for converting single or bulk OST files into PST files at a time without losing any details. Download free trial copy which permit converting 25 items/folder at free of cost.
Download for Free- https://www.macmister.com/ost/

For converting OST data to PST files that contain tasks, notes, journals, emails, contacts, and more items, the best program is MacMister OST to PST Converter. It's also advised that you use the program's free demo copy to learn all of the steps required for changing OST files to PST.
Read Also- OST Converter

If you need to convert OST files to PST format then, you can go with the most suggested solution i.e. MacMister Mac OST Converter to batch import OST to PST without Outlook. This tool also comes with a free trial edition. Using the demo copy, one can easily import the first 25 items from each OST folder. The software also supports all editions of macOS, Win OS, and Outlook.

MacMister Mac OST Converter is most demanding and popular tool to directly convert OST file to PST without Outlook. It allows the users to convert the OST files in the bulk at once without any data loss. The Mac OST to PST Tool is instantly export the Exchange OST emails into PST file format along with entire mailbox items i.e. contacts, emails, journals, attachment, notes, task, etc. It’s also suitable with all editions of Outlook, including 2021, 2019, 2016, 2013, 2010, 2007, etc.