Import Outlook 2011 Mail to Mac Mail

Searching for a tool to Import Outlook 2011 Mail to Mac Mail than stop searching more use OLM to MBOX Converter tool 4.0 which import OLM Outlook Emails to Apple Mail. Basically the problem occur in outlook 2011 because when ever your space reaches near to 20 GB system booting problem emerged, that's why user need to convert to or import outlook 2011 mail to Mac mail as soon as possible to get rid of this kind of inconvenience.