The email smtp is configured in the user.config file and am able to send email through custom modules. However, I think there seems to be a problem receiving emails when sent from Form Wizard Pro Forms or contact us. Not sure if there is something am missing. I haven't configured the mail tab of admin settings page instead as mentioned configured smtp in user.config.

Also most of the times the mails are received after a very long time after the mails are sent from the custom module. There could be an issue with Godaddy as well in this regard. The mails are not instantaneous.

Looking for an external bulk smtp service that is reliable and can be used for bulk mail newsletters. Any suggestions are highly appreciated.

Thanks for the prompt response. I couldn't figure why mails sent from the custom module did work and those that sent from form wizard / contact us form didn't go through. I think am missing something (config) some where. In fact I tried the forgot password and that didn't go through either.

Below is the settings on web.config

<system.net>
    <mailSettings>
      <smtp>
        <network host="relay-hosting.secureserver.net"/>
      </smtp>
    </mailSettings>
  </system.net>

And in the user.config

<add key="DisableDotNetOpenMail" value="true"/>
  <add key="SMTPServer" value="relay-hosting.secureserver.net"/>
  <add key="SMTPRequiresAuthentication" value="true"/>
  <add key="SMTPUseSsl" value="false"/>
  <add key="SMTPPort" value="25"/>
  <add key="SMTPUser" value="userid@godaddyhosteddomain.com"/>
  <add key="SMTPPassword" value="pwd"/>
  <add key="SMTPTimeoutInMilliseconds" value="30000"/>

code used in custom module to send mail (which is working)

           myMail.Body = msg.ToString();
            myMail.IsBodyHtml = true;
            SmtpClient smtp = new SmtpClient();
            smtp.Credentials = CredentialCache.DefaultNetworkCredentials;
            smtp.Send(myMail);

Regarding external smtp service, I will explore Elastic Email. Looks interesting and economical.

Further, what are your thoughts on minimum things to be considered for legal compliance especially when sending bulk emails.