HTML Emails Sent From VBA Replies Blank

[preludeofme]

Having a problem with a macro that sends out emails formatted as HTML (.HTMLBody). I'm sending from outlook 2010 and it looks fine on my machine and on like a web-based client but when someone tries to reply to my email from outlook 2003 the body of the email is blank.

here's the code i'm using:

Sub SendEmail()
    Dim rng As Range
    Dim OutApp As Object
    Dim OutMail As Object
 
    intro = "Introduction"    
    body = "body of email with HTML tags for formatting"    
 
 
    With Application
        .EnableEvents = False
        .ScreenUpdating = False
    End With
 
    Set rng = Nothing
    countnum = Sheets("Sheet2").Range("A50000").End(xlUp).Row
 
 
    Set rng = Sheets("Sheet2").Range("A10:E" & countnum)
 
 
    'Set rng = Sheets("YourSheet").UsedRange
    Set OutApp = CreateObject("Outlook.Application")
    Set OutMail = OutApp.CreateItem(0)
 
    On Error Resume Next
    With OutMail
        .to = Sheets("Sheet2").Range("B2").Value
        .CC = ""
        .BCC = ""
        .Subject = "Subject"
        .HTMLBody = intro & RangetoHTML(rng) & body
        .Send
 
    End With
    On Error GoTo 0
 
    With Application
        .EnableEvents = True
        .ScreenUpdating = True
    End With
 
    Set OutMail = Nothing
    Set OutApp = Nothing
End Sub
'------------------------------------------------------------------
'------------------------------------------------------------------ 
 
Function RangetoHTML(rng As Range)
' Works in Excel 2000, Excel 2002, Excel 2003, Excel 2007, Excel 2010, Outlook 2000, Outlook 2002, Outlook 2003, Outlook 2007, and Outlook 2010.
    Dim fso As Object
    Dim ts As Object
    Dim TempFile As String
    Dim TempWB As Workbook
    TempFile = Environ$("temp") & "/" & Format(Now, "dd-mm-yy h-mm-ss") & ".htm"
 
    ' Copy the range and create a workbook to receive the data.
    rng.Copy
    Set TempWB = Workbooks.Add(1)
    With TempWB.Sheets(1)
        .Cells(1).PasteSpecial Paste:=8
        .Cells(1).PasteSpecial xlPasteValues, , False, False
        .Cells(1).PasteSpecial xlPasteFormats, , False, False
        .Cells(1).Select
        Application.CutCopyMode = False
        On Error Resume Next
        .DrawingObjects.Visible = True
        .DrawingObjects.Delete
        On Error GoTo 0
    End With
 
    ' Publish the sheet to an .htm file.
    With TempWB.PublishObjects.Add( _
         SourceType:=xlSourceRange, _
         Filename:=TempFile, _
         Sheet:=TempWB.Sheets(1).Name, _
         Source:=TempWB.Sheets(1).UsedRange.Address, _
         HtmlType:=xlHtmlStatic)
        .Publish (True)
    End With
 
    ' Read all data from the .htm file into the RangetoHTML subroutine.
    Set fso = CreateObject("Scripting.FileSystemObject")
    Set ts = fso.GetFile(TempFile).OpenAsTextStream(1, -2)
    RangetoHTML = ts.ReadAll
    ts.Close
    RangetoHTML = Replace(RangetoHTML, "align=center x:publishsource=", _
                          "align=left x:publishsource=")
 
    ' Close TempWB.
    TempWB.Close savechanges:=False
 
    ' Delete the htm file.
    Kill TempFile
 
    Set ts = Nothing
    Set fso = Nothing
    Set TempWB = Nothing
End Function

The code inserts a selected range into the email in between the intro and the body. i've tried to use the regular .body format instead but the table does not get inserted properly and loses all the formatting.

From what i can tell, the reply in outlook does not reflect HTML tags so it just shows as blank instead of the body of my email. Any ideas?