One thing I have noticed in forums is that people are curious about features available with different flavors of SQL Server.

Most of the times questions comes like I installed SQL Server 2008 Express and find Database Mail missing,Do I need to re-install SQL Server again?

The answer is SQL Server Express doesn’t support Database Mail.

Its not really easy to remember what feature comes in with which edition,however there is a very smart and easy comparison page provided my Microsoft.

http://www.microsoft.com/sqlserver/en/us/product-info/compare.aspx 

You have the option to select multiple versions and compare the features here.Hope this post will help you answer some of the feature related questions.

Thanks for reading.