How can i export contacts from OST to vCard without any problem?
If any users can export contacts from OST to vCard without any problem so use the most strongest conversion tool that's named eSoftTools OST to PST Converter software. It can simply convert and export Outlook all mailbox items like calendar, inbox, sent box, outbox, attachment to Office 365, PST, Gmail, Yahoo Mail, Zimbra, MBOX, MSG, ICS, vCard, EMLX, and other formats with simple click on mouse. It has a email filtration option, using this options you can simply convert filtered email to a specific date to date range.
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