With this comprehensive software, you can easily convert mailboxes of various email clients such as Eudora, SeaMonkey, MailMate, Outspring Mail, Opera Mail, Thunderbird, PostBox, Outlook 2011, and Apple Mail into MBOX file of Apple Mail or RGE file of Outlook 2011. It converts all emails and their attachments without modifying their existing folder structure. Also, it provides a preview of the converted mailbox items before saving.