For a reasonably simple case you could use a macro such as the following.

You have to make a reference to Microsoft Outlook 11.0 Object Library (or
the appropriate version of the library) in the VB Editor when this module is
open.

Sub EmailOneDocPerSourceRecWithBody()
Dim bOutlookStarted As Boolean
Dim bTerminateMerge As Boolean
Dim intSourceRecord As Integer
Dim objMailItem As Outlook.MailItem
Dim objMerge As Word.MailMerge
Dim objOutlook As Outlook.Application
Dim strMailSubject As String
Dim strMailTo As String
Dim strMailBody As String
Dim strOutputDocumentName As String

bOutlookStarted = False
bTerminateMerge = False

' Set up a reference to the
' Activedocument, partly because
' the ActiveDocument changes as you
' merge each record

Set objMerge = ActiveDocument.MailMerge

' Start Outlook as necessary

On Error Resume Next
Set objOutlook = GetObject(, "Outlook.Application")
If Err <> 0 Then
 Set objOutlook = CreateObject("Outlook.Application")
 bOutlookStarted = True
End If

With objMerge

' If no data source has been defined,
' do it here using OpenDataSource.
' But if it is already defined in the
' document, you should not need to
' define it here.

' .OpenDataSource _
' Name:="whatever"

intSourceRecord = 1

Do Until bTerminateMerge
 .DataSource.ActiveRecord = intSourceRecord

 ' if we have gone past the end
 ' (and possibly, if there are no records)
 ' then the Activerecord will not be what
 ' we have just tried to set it to

 If .DataSource.ActiveRecord <> intSourceRecord Then
   bTerminateMerge = True
   ' the record exists
 Else

   ' while we are looking at the
   ' correct activerecord,
   ' create the mail subject, body and "to"
   ' Just some sample code here - replace it with
   ' whatever you need

   strMailSubject = _
     "Results for " & _
     objMerge.DataSource.DataFields("Firstname") & _
     " " & objMerge.DataSource.DataFields("Lastname")

   strMailBody = _
     "Dear " & objMerge.DataSource.DataFields("Firstname") & _
     vbCrLf & _
     "Please find attached a Word document containing" & vbCrLf & _
     "your results for..." & vbCrLf & _
     vbCrLf & _
     "Yours" & vbCrLf & _
     "Your name"
   strMailTo = objMerge.DataSource.DataFields("Emailaddress")

   ' create the document path name
   ' In this case it can be te same for every recipient,
   ' but if you want to retain copies of the
   ' document, you can use info. in the data source

   ' this is an example - insert your
   ' own pathname here

   strOutputDocumentName = "c:\a\results.doc"

   ' strOutputDocumentName = _
   '  "c:\mymergeletters\_" & _
   '  .DataSource.DataFields("Lastname").Value & _
   '  " letter.doc"
   .DataSource.FirstRecord = intSourceRecord
   .DataSource.LastRecord = intSourceRecord
   .Destination = wdSendToNewDocument
   .Execute

   ' The Activedocument is always the
   ' output document

   ' Add any parameters you need to these calls
   ActiveDocument.SaveAs strOutputDocumentName
   ActiveDocument.Close

   ' Now create a

   Set objMailItem = objOutlook.CreateItem(olMailItem)
   With objMailItem
     .Subject = strMailSubject
     .Body = strMailBody
     .To = strMailTo
     .Attachments.Add strOutputDocumentName, olByValue, 1
     '.Save
     .Send
    End With
    Set objMailItem = Nothing

   intSourceRecord = intSourceRecord + 1
 End If
Loop
End With

' Close Outlook if appropriate

If bOutlookStarted Then
 objOutlook.Quit
End If

Set objOutlook = Nothing
Set objMerge = Nothing

End Sub

Peter Jamieson

See the article prepared by fellow MVP Doug Robbins at
http://word.mvps.org/FAQs/MailMerge/MergeWithAttachments.htm