If you want to export IMAP Email to PST, I would recommend the CloudXena IMAP Email Backup Tool. This software helps you safely move mailboxes between email servers that support IMAP without losing any data. It works with all major email services like Gmail, Yahoo, Office 365, and others. The utility also allows you to export data from IMAP emails to PDF, MBOX, EML, MSG, CSV, DOC, and DOCX. Moreover, using this software, you can migrate one or an entire mailbox at once.

To Know More: https://www.cloudxena.com/imap-backup-tool/