Can I send emails without authenticating on the SMTP server?

Question

i am creating simple email sending application. In my application when ever i send email i have to put my email address or password as from but i don\'t want to use password

Answer 1

Can i send Email without using password using c#/.net application ?

Yes, if you have access to an email gateway that doesn't require authentication you can simply do:

SmtpClient mailClient = new SmtpClient("your.emailgateway.com");
mailClient.Send(message);

Maybe your company or ISP can provide one for you?