Windows Live Mail is a good email client. It is free but very usable. I am not comparing it with Office Outlook but as a free software it is quite usable. I use this daily for my personal email. I use two email accounts registered with Windows Live Mail. I have calenders and contacts. I can access my contacts and calenders while I am offline. But If I want to access my server calenders and contacts then I need to just log in to Windows Live Mail.