1.
OLM Files to MBOX files
http://www.digitaltweaks.com/outlook-mac-export-import-tool/

2.
 Difficulty to use Outlook 2011 for Mac
 Outlook Mac requires expertise knowledge to gain benefits of
specific features
 Complicated interface support makes things worse
 Some specific requirements insist users to switch to Mailbox that is
easy to use
 To expand data accessibility of MBOX files in several email clients

3.
 MBOX file is compatible with several email programs
 It can be opened using any compatible text editor on Mac
 It keeps the email messages in a single file, at one place

4.
 Software applications supporting email conversion facility provide
extensive support to migrate OLM to MBOX format, instantly and
accurately.

5.
 Digital Tweaks rewards users with its convenient and fast email
converter availing a wide concept of reliable and flawless OLM to
MBOX conversion, in just a matter of a few seconds.
 A fully-automated and intelligent solution to switch between email
clients

6.
 Get more information about OLM to MBOX Migration Tool
 http://www.digitaltweaks.com/convert-olm-to-mbox/
 https://olmtombox.wordpress.com/
 http://olmtombox.blog.com/