SQL Server - Difference between Database Mail and SQL Mail

The below are the major differences between DB Mail and SQL Mail .

1. DB Mail in introduced in SQL Server 2005 where as SQL Mail is used prior versions of SQL             Server 2005 .

2. To work with DB Mail outlook is not required but to work with SQL Mail Outlook is mandatory .

3. DB Mail is more secure than SQL Mail .

4. DB Mail will works based on SMTP (Simple Mail Transfer Protocol ) where as SQL Mail will           works on MAPI (Messaging Application Programming Interface ) .