First collect your files from Thunderbird, Apple Mail or Google Takeout to convert your MBOX files to PST with attachments. Outlook cannot open them directly so conversion is necessary. A useful tip- before converting, check if your tool shows a preview of your files. Kernel MBOX to PST Converter offers this, where you can confirm the attachments are present or not. Then select PST as the output format, save at a location and start the process. Finally, import the PST into Outlook and open a few emails to verify.
First collect your files from Thunderbird, Apple Mail or Google Takeout to convert your MBOX files to PST with attachments. Outlook cannot open them directly so conversion is necessary. A useful tip- before converting, check if your tool shows a preview of your files. Kernel MBOX to PST Converter offers this, where you can confirm the attachments are present or not. Then select PST as the output format, save at a location and start the process. Finally, import the PST into Outlook and open a few emails to verify.