How to migrate from IMAP to POP (ost to pst)

10 pts.
Tags:
IMAP
Microsoft Outlook
POP
I'm changing an employee's email to POP from IMAP, but can't import the old .ost file to retrieve older emails. I already deleted the old IMAP account and created the new POP. The old .ost file is still there, I just can't open it or retrieve any messages. Even tried recreating the IMAP account and renaming the old .ost to the new .ost file name, but that just produced an error.

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OST file is bound to the specific profile and Its access can be only done when you log in and authenticate using the profile originally used to create an OST file.  You can migrate from offline ost to pst, if your Exchange Server is up and connectivity of MS Outlook with MS Exchange is working properly. You need to follow below procedures:

First Technique:

Open Microsoft Outlook >> File >> Import and Export >> Export to a File  >> Personal Storage Table File >> Select the Mailbox folder which you want to export >> provide the location to save pst file and finally click on “finish” .

Second Technique:

You can delete the local OST file and recreate the OST files with Outlook from scratch when the connection between the Microsoft Exchange Server and the Outlook user’s profile is available. This newly created OST file will synchronize with Exchange Server’s mailboxes data. This newly created file will produce no error. But you have already told that you have used this technique, then there might error in your ost file.

Hence you can use OST Integrity Checker Tool(scanost.exe) or Inbox repair Tool (scanpst.exe)depending on the versions of Outlook to repair ost file after that use “First Technique” to migrate from OST to PST. You can also use any reliable OST Repair tool to do the same task.

http://www.solutions.microsoftostconverter.com/ost-to-pst-converter/

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  • TheRealRaven
    I don't know of a good reason to go from IMAP to POP (or even POP3, though it's definitely better than POP). I'd be interested in hearing if any reasons exist.
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  • alisasmith
    I would like to suggest you another useful solution which helps you a lot . I had similar problem like yours but I got a useful article. See here; https://gallery.technet.microsoft.com/How-to-Convert-Offline-OST-d8ab9249
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  • Genderhayes

    Tools account setting menu server settings uncheck both check for new messages at start up

    Create IMAP account Open file new existing account menu use help of the assistance If asked to use POP or IMAP select IMAP remote folders

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  • Subhendu Sen
    Try to navigate here and you can get help: https://www.msoutlook.info/question/705.
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  • davidcarey

    You can get PST file from an OST file, if your exchange server is up and connectivity of ms outlook with MS exchange is working properly. You can get .pst file from that configured ost file that is a good ost to pst conversion strategy. You have to follow these steps:

    Go File >> Import and Export

    >> Export to a file

    >> Personal Folder File (.pst)

    >> Select the Mailbox Folders which you want to convert into PST format

    >> Provide a location to save PST file

    >> Click Finish

    This process is also called the backup pst process. You can get your ost file data into pst file format.

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  • alisasmith
    Dear user,
    Did you also delete all the emails from the server
    OR
    does all the email still exist on the server at all ?

    Delete the local OST file and rebuild the OST files with Outlook from scratch when the connection between the Microsoft Exchange Server and the Outlook user’s profile is recreated .You can also rename the old OST file and then synchronize the renamed OST file with the Microsoft Exchange Server. If there are no data in the Mailbox of the Exchange server or data is deleted from the Mailbox then recovery of OST files can be done with the help of third party solutions. I would recommend you a software which becomes helpful for recovery of deleted OST email.  I've used a lot of free tools but believe me they are not that reliable. I was searching for a software that will guarantee my data and safely recover the attachments as well as emails. 
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  • Gulab Prasad
    Its high time you should migrate to Office 365.
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