Uniquely identify an email on send using System.Net.Mail?

One option is to attach a custom header to the message. Custom headers are indicated with a X- prefix. So in this case, you might create one called X-Unique-Id which would not be overwritten.

Depending on what you mean by "client system", I'd suggest you add a customer header such as X-MyHeader: GUID.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.