If you want to convert OST to PST then try this Enstella OST to PST Converter Software. It has many conversion formats like OST to PST, EML, MSG, ELMX, MBOX, HTML, Zimbra, VCF, & ICS and converts OST emails, contacts, calendars, tasks, journals, etc.
Users are converted single/multiple OST files at the same time with help of bulk conversion features and after conversion, you can split large PST files up to 5GB. Try this software with a free demo version and recover 25 items per folder.
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