Since it seems no one else has an idea..... maybe you might like to try this
Sub Search_Move_Email()
Dim olItem As Outlook.MailItem
Dim MailItem As Outlook.MailItem
Dim sText As String
Dim myNameSpace As Outlook.NameSpace
Dim myDestFolder As Outlook.MAPIFolder
Dim mySearchFolder As Outlook.MAPIFolder
Set myNameSpace = Application.GetNamespace("MAPI")
Set myDestFolder = myNameSpace.Folders("root").Folders("archiv")
Set mySearchFolder = myNameSpace.Folders("root").Folders("alert-check")
For Each MailItem In mySearchFolder.Items
Set olItem = MailItem
sText = olItem.Body
If (InStr(1, sText, "no rows selected", vbTextCompare) > 0) then
olItem.Move myDestFolder
ElseIf (InStr(1, sText, "Es wurden keine Zeilen ausgewählt", vbTextCompare) > 0) Then
olItem.Move myDestFolder
End If
Next
End Sub