You can simply send the email by using the Appeon web server. It is very easy to send or receive an email. For instant support related to Roadrunner Email please contact Roadrunner Email Password Reset for the quick response.
take Roland/Bruce's code at http://www.topwizprogramming.com/pbnismtp.html
wrap it into a PB NVO and compile as a PB .NET Assembly target
deploy (copy) the generated Assembly to PowerServer Web for .NET (IIS)
call the Assembly using the AppeonDotNetComponent object included into appeon_workaround.pbl
Alternatively, you can skip 1) and 2) and take one among the few freeware C# example codes demonstrating how to send email using SMTP, compile the code (from Visual Studio) into a managed .NET Assembly and do 3) and 4).