I’m also looking into OST to PST conversion and came across GainTools OST to PST Converter. The main thing I’d want to verify before using any such tool is whether it preserves the original folder structure, attachments, and email metadata correctly. If anyone here has actually used GainTools for a large or inaccessible OST file, I’d be interested to know how the conversion went and whether the resulting PST opened properly in Outlook.
