If you want to download all emails from the IMAP server to PDF document then you must try the eSoftTools IMAP migration software. Once you download this tool it will show you all the processes and details. there are several more benefits of this tool.To accessing IMAP emails without the internet you can save your files into PDF in case of unavailability of the internet users becoming unable to access their emails but once you save your files into PDF you can see your emails without the internet.
Know More - Download Emails from IMAP Server to PDF Document