I suggest using SysInspire OST to PST Converter Software if you have any issues importing Outlook mailboxes. The import of mailboxes from Outlook is simple. It is a fantastic choice that will be quite helpful for you. For converting your OST to PST, EMLX, EML, Office 365, HTML, and other formats, it supports a variety of formats. Another fantastic feature of it is the ability to split your PST import into multiple files.

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