Unity 3D SmtpClient on iPad

I am trying to use the SmtpClient class in Mono to send an email when deploying my Unity solution to an iPad. It works on my Mac, but when deploying to the iPad, it completely crashes without any errors in the profiler. I have tried setting the Api compatibility based on this: Sending Email From Unity Works In Editor, Not In Standalone? - Unity Answers. But it still crashes. Any ideas?

I simply tried again, and it worked. I believe the Api compatibility setting is key though. Also my understanding is that the SmtpClient class only works with iOS Pro.