Is that there are many option by which ost file and pst files can together export into other format.

I understand your frustration with spending too much time extracting contacts from PST files. Manual methods are annoying and tedious, and they can also result in data loss or corruption. That’s why I recommend you use professional and reliable software…

You can manually extract attachments from emails. It's important to note that this method can be time-consuming, prone, to errors difficult to scale, lacking features, and quite tedious. To securely extract attachments from Outlook and ensure data integrity…