Export Emails from Outlook App in an Iphone to a .pst file (Not OWA)

I moved my email accounts from an IMAP server to Office 365... I did not performed an IMAP to Exchange migration because I had created a backup.pst file in my computer for all the emails. For some reason that .pst file got corrupted and I was not able to import the old emails to my new Exchange account within Outlook. How ever I do have all of those emails in my Iphone in the Outlook App (Not OWA just the regular Outlook APP)...  The App has the old IMAP configuration and when I open it asks me to enter my correct credentials and wont let me move to another screen nor see my emails. But when I put my phone in airplane mode the app wont ask me for my credentials and I can see all the emails that I need. I need to extract does emails... Someone has a clue on how to export those emails from my phone to a .pst file or if its possible?
ctuprAsked:
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David Johnson, CD, MVPOwnerCommented:
always, always test before making an irrevocable change.. with IMAP the messages exist on the server and not on the client. only enough of the messages are downloaded in order to perform the current operations. Office 365 has several mail import options. all that I can suggest now is that you try the scanpst and recover the damaged .pst file

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