This IMAP backup tool is a free solution called eSoftTools IMAP Backup & Migration Software, which can also export IMAP emails to MBOX. By using it, it provides quick results for conversion with high quality while maintaining all the data in an accurate way. Moreover, you can try it for free right now to enjoy more features of this software without wasting your time.

Read more- https://www.esofttools.com/blog/export-imap-mail-folder-to-mbox/