private void BtnSendEmail_Click(object sender, RoutedEventArgs e) { // Список адресов для рассылки. List <string> listStrMails = Constants.listStrMails; string strPassword = passwordBox.Password; string senderEmail = Constants.SENDER_EMAIL; string subject = tbSubject.Text; string body = tbBody.Text; foreach (string recieverEmail in listStrMails) { var mail = new EmailSendService(); mail.Send(senderEmail, strPassword, recieverEmail, subject, body); } SendEndWindow sew = new SendEndWindow { Owner = this }; sew.ShowDialog(); }