how to remove IMAP Property from Outlook folder

• Get MFCMAPI . If you have 64 bit office, you need 64 bit MFCMAPI. 

• Open MFCMAPI, go to Session, Logon

• Select your profile

• Double-click on the affected data store. This should open another windows.

• Expand Root - Mailbox

• Expand Top of Information Store or IPM_Subtree

• Select Inbox

• Look for PR_CONTAINER_CLASS in the right pane, double-click on it.

• Change IPF.IMAP to IPF.Note then click OK to close the dialog.

• Repeat for each folder that was exported from an IMAP data file.
• When you are finished, close the MFCMAPI window, click Session, Logoff on the last MFCMAPI window.