Microsoft Excel: uso de VBA para enviar correos electrónicos con un bucle

Este código filtra una hoja de Excel por apellido, copia los datos en un nuevo libro de trabajo, luego hace un Vlookup en la hoja 2 para hacer coincidir el apellido con un correo electrónico y envía un correo electrónico a esa persona. Edité el código para ingresar el texto del cuerpo del correo electrónico.

Recibo el error: la siguiente referencia de variable de control no es válida. ¿Alguna idea de lo que estoy haciendo mal?

Lo tenía funcionando perfectamente antes, pero no podía enviar el texto del cuerpo en el correo electrónico.

La línea de código para la sección problemática era originalmente:

            'Save, Mail, Close and Delete the file
            With NewWB
                .SaveAs TempFilePath & TempFileName _
                      & FileExtStr, FileFormat:=FileFormatNum
                On Error Resume Next
                For I = 1 To 3
                .SendMail mailAddress, _
                              "Subject Line Here"
                    If Err.Number = 0 Then Exit For
                Next I

                On Error GoTo 0
                .Close SaveChanges:=False
            End With

Sub Send_Row_Or_Rows_Attachment_1()
'For Tips see: http://www.rondebruin.nl/win/winmail/div/tips.htm
'Working in Excel 2000-2016
    Dim rng As Range
    Dim Ash As Worksheet
    Dim Cws As Worksheet
    Dim Rcount As Long
    Dim Rnum As Long
    Dim FilterRange As Range
    Dim FieldNum As Integer
    Dim mailAddress As String
    Dim NewWB As Workbook
    Dim TempFilePath As String
    Dim TempFileName As String
    Dim FileExtStr As String
    Dim FileFormatNum As Long
    Dim I As Long
    Dim OutApp As Object
    Dim OutMail As Object


    On Error GoTo cleanup

    With Application
        .EnableEvents = False
        .ScreenUpdating = False
    End With

    'Set filter sheet, you can also use Sheets("MySheet")
    Set Ash = ActiveSheet

    'Set filter range and filter column (column with names)
    Set FilterRange = Ash.Range("A1:H" & Ash.Rows.Count)
    FieldNum = 1    'Filter column = A because the filter range start in column A

    'Add a worksheet for the unique list and copy the unique list in A1
    Set Cws = Worksheets.Add
    FilterRange.Columns(FieldNum).AdvancedFilter _
            Action:=xlFilterCopy, _
            CopyToRange:=Cws.Range("A1"), _
            CriteriaRange:="", Unique:=True

    'Count of the unique values + the header cell
    Rcount = Application.WorksheetFunction.CountA(Cws.Columns(1))

    'If there are unique values start the loop
    If Rcount >= 2 Then
        For Rnum = 2 To Rcount

            'Look for the mail address in the MailInfo worksheet
            mailAddress = ""
            On Error Resume Next
            mailAddress = Application.WorksheetFunction. _
                          VLookup(Cws.Cells(Rnum, 1).Value, _
                                  Worksheets("Mailinfo").Range("A1:B" & _
                                      Worksheets("Mailinfo").Rows.Count), 2, False)
            On Error GoTo 0

            If mailAddress <> "" Then

                'Filter the FilterRange on the FieldNum column
                FilterRange.AutoFilter Field:=FieldNum, _
                                       Criteria1:=Cws.Cells(Rnum, 1).Value

                'Copy the visible data in a new workbook
                With Ash.AutoFilter.Range
                    On Error Resume Next
                    Set rng = .SpecialCells(xlCellTypeVisible)
                    On Error GoTo 0
                End With

                Set NewWB = Workbooks.Add(xlWBATWorksheet)

                rng.Copy
                With NewWB.Sheets(1)
                    .Cells(1).PasteSpecial Paste:=8
                    .Cells(1).PasteSpecial Paste:=xlPasteValues
                    .Cells(1).PasteSpecial Paste:=xlPasteFormats
                    .Cells(1).Select
                    Application.CutCopyMode = False
                End With

                'Create a file name
                TempFilePath = Environ$("temp") & "\"
                TempFileName = "Overdue STAS Plans" & Ash.Parent.Name _
                             & " " & Format(Now, "dd-mmm-yy h-mm-ss")

                If Val(Application.Version) < 12 Then
                    'You use Excel 97-2003
                    FileExtStr = ".xls": FileFormatNum = -4143
                Else
                    'You use Excel 2007-2016
                    FileExtStr = ".xlsx": FileFormatNum = 51
                End If

                Set OutApp = CreateObject("Outlook.Application")
                Set OutMail = OutApp.CreateItem(0)

                On Error Resume Next

                'Save, Mail, Close and Delete the file
                With NewWB
                    .SaveAs TempFilePath & TempFileName _
                          & FileExtStr, FileFormat:=FileFormatNum
                                        On Error Resume Next
                    For I = 1 To 3
                        Next OutMail
                            .To = "mailAddress"
                            .CC = ""
                            .BCC = ""
                            .Subject = ""
                            .Body = "hi"
                            .Attachments.Add.TempFileName
                            .Display
                        End With

                        If Err.Number = 0 Then Exit For
                        Next I

                    On Error GoTo 0
                    .Close SaveChanges:=False

                End With

                'Delete the file you have send
                Kill TempFilePath & TempFileName & FileExtStr

                End If

            'Close AutoFilter
            Ash.AutoFilterMode = False

        Next Rnum
    End If

cleanup:
    Application.DisplayAlerts = False
    Cws.Delete
    Application.DisplayAlerts = True

    With Application
        .EnableEvents = True
        .ScreenUpdating = True
    End With
End Sub

Tienes un extraño Next:

 For I = 1 To 
     Next OutMail

probablemente quisiste escribir With