Give the new Microsoft Exchange 2013 Preview a try, you can download it from the Technet Site using the link below
http://technet.microsoft.com/en-US/evalcenter/hh973395.aspx?wt.mc_id=TEC_116_1_33
You will require one of the following operating systems to install the Exchange 2013 Preview:
- Windows Server 2012
- Windows Server 2008 R2 Standard with SP1
- Windows Server 2008 R2 Enterprise with SP1
- Windows Server 2008 R2 Datacenter RTM or later
Exchange 2013 Preview allows you to use one of the following Microsoft Outlook or Microsoft Entourage clients:
- Outlook 2013 (Preview)
- Outlook 2010 SP1 (with April 2012 Cumulative Update)
- Outlook 2007 SP3 (with July 2012 Cumulative Update)
- Entourage 2008 for Mac (Web Services Edition)
- Outlook for Mac 2011
You will require one of the following operating systems to install the Exchange 2013 Management tools:
- Windows Server 2012
- Windows Server 2008 R2 Standard with SP1
- Windows Server 2008 R2 Enterprise with SP1
- Windows Server 2008 R2 Datacenter RTM or later
- 64-bit edition of Windows 8 Release Preview
- 64-bit edition of Windows 7 with SP1