If you are working in an office which is running MS exchange and you can't save your emails as as PST, and you want to copy your emails you will need an OST to PST Converter. Unfortunately I havent found any free versions of software to do this.
Some system administrators lock down Microsoft Outlook so you can't "save as PST", luckily Outlook saves a cached OST file on your local drive.
Kernel OST to PST software converts OST files to PST in a number of ways eg splits file size of PST, selectable folder etc. I tested it on a 15Gb OST file using the demo version (25 entries per fold) and it correctly saved my PST which opened in Outlook.
There are 2 versions of the software: home, corporate. The differences are shown here http://www.nucleustechnologies.com/buy-ost-pst-recovery.php
I have a 20% off code (nul20ost) for the home version US$99 - 20% = US$79.20 or around AUD$114
Hint: If you want 30% off corporate license, click "Chat" on their website and haggle with the support agent, he can then generate a customised 30% off coupon.
https://secure.avangate.com/order/cart.php?PRODS=4533402&QTY… - is a link for 25% off the corporate version US$199 less 25% = US$149.25 or around AUD$164
Original Soundtrack to Pacific Standard Time?
Sounds useful!