How To Setup SQL Server Reporting Services for email delivery

Here is how to get SQL Server Reporting Services email to work:

You simply need to edit the RSreportserver.config file and enter your mail host name.

In the section; you need to alter the following two lines in the reportserver.config:

mail.yourname.com
ReportServer@yourname.com

For further information, see Microsoft's long winded version here:
Configuring a Report Server for E-Mail Delivery