You could use the Outlook word editor to do whatever you wish with the message body e.g. in the following example wdDoc is the message body, and oRng is the range in question. By collapsing the range to the start, you can retain the default signature associated with the account. If you want to lose the signature, don't collapse the range.
If you want to keep all the formatting in the original document, copy the document range and paste it to oRng instead of formatting a text string.
Or you could simply use
E-Mail Merge Add-in
Code:
Dim olInsp As Object
Dim objMail As Object
Dim wdDoc As Object
Dim oRng As Object
Set objMail = objOutlook.CreateItem(0)
' E-Mail settings
With objMail
.To = strTo
.Subject = strSubj
.BodyFormat = 2
Set olInsp = .GetInspector
Set wdDoc = olInsp.WordEditor
Set oRng = wdDoc.Range
oRng.Collapse 1
.Display
oRng.Text = strBody
oRng.Font.Name = "Arial"
oRng.Font.Size = 10
For a = LBound(strIndivAttach) To UBound(strIndivAttach) ' in case there are several attachments
If Dir(strIndivAttach(a)) <> "" Then
.Attachments.Add (strIndivAttach(a))
End If
Next a
.send ' Send
End With