There is a FAQ on the ASP.NET Forum pinned by Mike and mainly focus on the FAQs for Email Sending in ASP.NET, and Dave also created a web site dedicated in this topic recently!
FAQ on System.Web.Mail Namespace
There is a FAQ on the ASP.NET Forum pinned by Mike and mainly focus on the FAQs for Email Sending in ASP.NET, and Dave also created a web site dedicated in this topic recently!