Accessing SMTP Mail Settings from Web.Config File by using c#

Just use the System.Net.Mail classes to send your e-mails. It will automagically pick-up the Mail setting from your web.config.

You can use the WebConfigurationManager:

Configuration configurationFile = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
MailSettingsSectionGroup mailSettings = configurationFile.GetSectionGroup("system.net/mailSettings") as MailSettingsSectionGroup;

Response.Write(mailSettings.Smtp.Network.Host);

Related...If you're accessing from both a website and an application this code can come in handy.

Configuration config;

bool isWebApp = HttpRuntime.AppDomainAppId != null;

if (isWebApp)
{
    config = WebConfigurationManager.OpenWebConfiguration(HttpContext.Current.Request.ApplicationPath);
}
else
{
    config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
}

var mailSettings = config.GetSectionGroup("system.net/mailSettings") as MailSettingsSectionGroup;