And in new Outlook versions, every IMAP account has only IMAP OST files without emails information. In earlier versions, with an IMAP account, two IMAP files are created out of which IMAP PST file holds information of emails along with attachments while IMAP OST file contains contacts, calendars, notes, etc. Recommended: Manual Methods to Convert OST to PST File Issue with new Outlook versions IMAP account management
