Sending Email notification of Registration using SMTP for webforms

Hi,

I have an application that is built using Webform, but I need to use SMTP verification rather than SendGrid.

http://www.asp.net/web-forms/overview/security/create-a-secure-aspnet-web-forms-app-with-user-registration,-email-confirmation-and-password-reset

This tutorial above explains the SendGrid method, and there is one tutorial that explains the SMTP approach but that uses the webpage framework to do so, as explained in this link:

 http://www.asp.net/web-pages/overview/security/16-adding-security-and-membership

Is there any code or tutorial available where I could use the SMTP approach.

or how I could use the webpage code with my webform framework.

Help me I am really confused.