Users can use the Roundcube Import feature to import MBOX to Roundcube Webmail  Webmail. Using this method, email clients can be manually configured to output MBOX files. After that, users must manually set up Roundcube to import these files. It so turns into a difficult procedure. This method is easy for technical users to utilize, but not so easy for non-techies. On the other hand, if you want to skip all of the hassles and successfully move your files without losing any of the data, you should use a specialized third-party tool. Download the MacProTools MBOX Converter for Mac to Raoundcube for the Import of MBOX Emails and Attachments. Any size of MBOX file can be transferred to a Roundcube account by the app. Use this software's free demo version for up to 50 files.