Break up Record set

Dear Experts,

My company produces a weekly newsletter and have an MS Access 2010 database which sends out the newsletter (it's an attachment) one at a time.  This works, however it sits on a network and takes a bit of time to run & every so often the connection to the network momentarily stops and then the sending fails as it can't pick up the attachment.

What I would like to do therefore is to group the recordset into blocks of 50 and BCC the recipients instead.  Does anybody have a piece of code which will take the first 50 recipients from the query "AllMembersLive" (the field name for the email address is "Email"), and save the email in outlook drafts.  It would then go back and repeat that for the next 50 etc etc.  

The membership list does change so I am keen not to have a "static" peice of code, by which I mean I would need to hard code in the "next 50" a set number of times.

Can anybody help

Private Sub Command2_Click()


    If Len(Me!txtFileName & "") = 0 Then
       MsgBox "The AM Update has not been attached!!", , "Warning"
        Cancel = True
        Exit Sub
        

End If

Me.WaitMessage.Visible = True

Dim rst As Recordset
    
    Set rst = CurrentDb.OpenRecordset("AllMembersLive")
    Do While Not rst.EOF

DoCmd.Save

Dim SEmailBody1 As String
Dim SEmailBody2 As String
Dim SEmailBody3 As String
Dim SEmailBody4 As String
Dim SEmailBody5 As String

SEmailBody1 =  "Email text - removed for privacy"

SEmailBody2 = "Email text - removed for privacy"

SEmailBody3 =  "Email text - removed for privacy"



        Dim mess_body As String
        Dim appOutLook As Outlook.Application
        Dim MailOutLook As Outlook.MailItem
        Set appOutLook = CreateObject("Outlook.Application")
        Set MailOutLook = appOutLook.CreateItem(olMailItem)
            
            Set appOutLook = CreateObject("Outlook.Application")
            Set MailOutLook = appOutLook.CreateItem(olMailItem)
            With MailOutLook
            .BodyFormat = olFormatRichText
            .To = rst!Email
            .Subject = "Correlate Search - Weekly Update, " & Date
            .HTMLBody = SEmailBody1 & SEmailBody2 & SEmailBody3
            
            If Left(Me.txtFileName, 1) <> "<" Then
                .Attachments.Add (Me.txtFileName)
            End If
            .DeleteAfterSubmit = True   'This would let Outlook send the note without storing it in your sent bin
            .Send
            End With
            'MsgBox MailOutLook.Body
            'Exit Sub
       
       rst.MoveNext
    
    Loop
    rst.Close
    Set rst = Nothing
    MsgBox "The AM Update has been sent!!", , "Success"
    Me.WaitMessage.Visible = False

EH:
      If Err.Number = 2501 Then
          Err.Clear
          Resume Next

     End If
End Sub

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