https://learn.microsoft.com/en-us/dotnet/api/system.net.mail.alternateview.createalternateviewfromstring?view=net-10.0&redirectedfrom=MSDN
AlternateView.CreateAlternateViewFromString Method (System.Net.Mail) | Microsoft Learn
Creates an AlternateView of an email message using the content specified in a String.
methodsystemmailmicrosoftlearn