Terry said:
Do you have an english version of this. Sorry I cannot read your language.
Terry
Hi Terry,
open you VBA Editor in you Outlook. ALT + F11
insert this code into "This Outlook Session"
Private Sub Application_ItemSend(ByVal Item As Object, Cancel As Boolean)
If IsNull(Item.Subject) Or Len(Item.Subject) = 0 Then
MsgBox "Subject Line is Empty!!!", vbCritical, "Outlook Subjectline"
Cancel = True
End If
End Sub
Save it and goes back to your Outlook.
Maybe you have to restart your Outlook