Everyone seems to have their preferred system of dealing with email. For personal email most people use Yahoo, Hotmail or Google mail. The problem that businesses face is that these services are inadequate.
What are the Corporate Email Solutions?
If you are in a large organisation it is most likely that you already using Microsoft Exchange for your server and Outlook for your email client. At HyperStream we use Google Apps and Google Mail. It does everything we need for email and contact management and integrates nicely with our Mobile Phones. Another solution called Zimbra is also very good and quite popular in educational establishments as it is Open Source.
Benefits of using Google Apps
Best spam filtering that we have seen