Corrected some bugs in Demo2.

demos/demo2/sendemail.cpp

@@ -19,6 +19,7 @@
 
 #include <QFileDialog>
 #include <QErrorMessage>
+#include <QMessageBox>
 
 #include <iostream>
 
@@ -119,6 +120,12 @@ void SendEmail::on_sendEmail_clicked()
         errorMessage("Mail sending failed");
         return;
     }
+    else
+    {
+        QMessageBox okMessage (this);
+        okMessage.setText("The email was succesfully sended.");
+        okMessage.exec();
+    }
 
     smtp.quit();
 

demos/demo2/sendemail.ui

@@ -95,7 +95,7 @@
            </font>
           </property>
           <property name="text">
-           <string>Use authentification</string>
+           <string>Use authentication</string>
           </property>
          </widget>
         </item>