Is System.Net.Mail.SmtpClient obsolete in 4.7?

It is not obsolete in .NET Framework 4.7. It was inadvertently documented as such in the API Browser due to a bug in the automated documentation generator. However, it is obsolete in Mono and Xamarin.

As Liam pointed out, this is obsolete due to a bug in documentation. Is System.Net.Mail.SmtpClient obsolete in 4.7?