Sending mail using SmtpClient in .net

Question

I am unable to send the mail using smtp client. here is the code:

SmtpClient client=new SmtpClient(\"Host\");
client.Credentials=new NetworkCredential(\"username         


        

Answer 1

The short answer : Do not use .net the internal SMTP client class - use MailKit.

The long answer :

1. It is marked as obsolete in MS docs

[System.Obsolete("SmtpClient and its network of types are poorly designed, we strongly recommend you use https://github.com/jstedfast/MailKit and https://github.com/jstedfast/MimeKit instead")] public class SmtpClient : IDisposable

1. Use the oss lib MailKit.
2. Elaboration : Because you will face its deficiencies sooner rather than later. Read here or read around the internet.
3. Here is an example for sending plain messages and multipart messages.

I intentionally did not copy-paste the examples from the docs here because the documentation may change over time and it is better to read .