The best way to convert Opera Mail to PST for Outlook is to try the TrustVare MBOX to PST Converter. Without any other tool or add-ons, this is the only quick and easy way to export all of your Opera Mail files to PST. It works with Opera Mail, Apple Mail, Eudora, Mozilla Thunderbird, Entourage, and other MBOX email clients. If you make a new PST file, it will keep all of the properties, security, and order of the old one. In the background, it has software that works on MBOX files and creates a perfect new PST file when it’s done. Because it works with the newest editions of Windows OS, users can be sure that it will work well.