The best way to backup Outlook emails to your computer or external drive is by using a professional Outlook Backup Tool. It lets you save all mailbox folders such as Inbox, Sent, and Drafts with attachments intact. You can export emails in multiple formats like PST, PDF, EML, or MBOX. The tool preserves the original folder hierarchy and maintains metadata like To, From, and Date. You can also apply filters to back up specific emails by date range. Whether for personal or business needs, this method ensures your Outlook data stays safe and accessible offline anytime.