In steps 1 to 11, we created a blank solution and added a .NET Standard 2.0 class library project to it. Then, we properly named the solution and its project. In steps 12 to 14, we renamed the default class generated from Visual Studio. In step 15, we added the necessary namespaces to send a mail in the using directive section. In step 16, we added four properties to the main class. These properties will store the mail addresses, subject, and the body of the mail.

In step 17, we wrote the actual code to prepare and send the mail. In the first two lines, we used the from and to addresses and converted them to MailAddress type. Then, we created a MailMessage and attached the body and the subject, along with the addresses. Then, we created the network credentials required to access the given SMTP server.

Then, we created an SmtpClient object, attached the credentials, and sent the mail. Finally, we did a quick build to check the syntax.