OST files store your Outlook data offline when connected to an Exchange server. PST files hold the same info but work anywhere, without a server. You need this switch during data migration, server issues, or when corruption hits. Tools for [easy OST to PST conversion](https://www.vsoftware.org/ost-to-pst-converter.html) save time and keep your info safe. They work with old and new Out... https://juniper-event-639.notion.site/Easy-OST-to-PST-Conversion-Software-for-All-Outlook-Versions-2da5a19cda9380208002e2ec92ed3c52