To backup Opera Mail to a local drive, you can take the help of the Opera Mail Converter. Through this tool, you can create a backup of Opera Mail Mailboxes. Also, this tool allows saving Opera mail emails to multiple file formats like PST, MSG, MBOX, EML, EMLX, CSV, etc. Moreover, this professional utility also exports Opera emails to many email clients, such as Gmail, Yahoo Mail, GoDaddy Email, Office 365, Thunderbird, etc.