Cleaning up your Outlook but still want to keep old emails accessible? With the help of the MSOutlookHelp OST to PST Converter, you can move Old Emails to PST File and keep your mailbox tidy without deleting important content. It preserves all message details like subject lines, sender names, dates, and attachments during conversion. The tool also handles large OST files smoothly, so even years of email won’t slow the process down. Plus, you get options to save your data in other formats if needed.

For more: https://www.msoutlookhelp.com/blog/move-old-emails-to-pst-file/