If you want to save Office 365 emails to a hard drive, here is the best informative article on save Outlook 365 emails to hard drive. This article will provide a trusted manual solution to migrate the process. However, the manual answer is soo complicated. So, additionally, they will also offer an advanced solution Office 365 Migration Tool. The software is the most efficient and effective utility that migrates Office 365 mailbox items into CSV, PST, PDF, DOC, MBOX, MSG, HTML, JSON,  etc. It also offers to migrate Office 365 email to Gmail, Yahoo, Thunderbird, IMAP, Zoho Mail, etc. Moreover, the utility ensures a smooth working process without any technical expertise. Users can remove their duplicate mail items to delete the emails in the migration process that occur more than once. Additionaly, it supports all versions of the Windows operating system. You can download the trial version of the software to access the performance.