OLFolderSync
by Somebytes

  OLFolderSync can synchronize any Microsoft® Outlook® folder with anyone else’s (except Drafts, Outbox, Sent Items and Deleted Items). The folders you allow to be synchronized will do so in the background by e-mail. You can easily synchronize Outlook folders through the internet without the need for both parties to be online at the same time.
If you have private data elements on Outlook you can exclude them from the synchronization process. It is also possible to synchronize only objects of a user defined category.
The installation is straight forward. To install and use this application you only need your Outlook to be configured with an e-mail account (POP3). After completing the install you will find a new property tab under each Outlook folder, where you can administrate the synchronization features. To configure the Add-In you only enter an access key and the e-mail address of your synchronization partner. The data transfer can be protected with a password.
OLFolderSync is very convenient to: