Que tal yo uso este código
Librerías
using System.Net.Mail;
using System.Net.Mime;using System.Net.Mail;
using System.Net.Mime;
Declaro las variables
private string To;
private string Subject;
private string Body;
private MailMessage mail;
private string To;
private string Subject;
private string Body;
private MailMessage mail;
if (!(cmbPersonal.Text.Trim() == ""))
{
To = cmbPersonal.Text;
Subject = txtAsunto.Text;
Body = txtMensaje.Text;
mail = new MailMessage();
mail.To.Add(new MailAddress(this.To));
mail.From = new MailAddress("tu_correo");
mail.Subject = Subject;
mail.Body = Body;
mail.IsBodyHtml = false;
//if (!(archivoAdjTxt.Text.Trim() == ""))
//{
// Data = new Attachment(archivoAdjTxt.Text, MediaTypeNames.Application.Octet);
// mail.Attachments.Add(Data);
//}
SmtpClient client = new SmtpClient("smtp-mail.outlook.com");
using (client)
{
client.Credentials = new System.Net.NetworkCredential("tucorreo", "Constraseña");
client.EnableSsl = true;
client.Send(mail);
}
MessageBox.Show("Mensaje enviado Exitosamente");
}
if (!(cmbPersonal.Text.Trim() == ""))
{
To = cmbPersonal.Text;
Subject = txtAsunto.Text;
Body = txtMensaje.Text;
mail = new MailMessage();
mail.To.Add(new MailAddress(this.To));
mail.From = new MailAddress("[email protected]");
mail.Subject = Subject;
mail.Body = Body;
mail.IsBodyHtml = false;
//if (!(archivoAdjTxt.Text.Trim() == ""))
//{
// Data = new Attachment(archivoAdjTxt.Text, MediaTypeNames.Application.Octet);
// mail.Attachments.Add(Data);
//}
SmtpClient client = new SmtpClient("smtp-mail.outlook.com");
using (client)
{
client.Credentials = new System.Net.NetworkCredential("[email protected]", "Password02");
client.EnableSsl = true;
client.Send(mail);
}
MessageBox.Show("Mensaje enviado Exitosamente");
}