excel code tweak for outlook - confusing

Guys/gals

I am using the following code to send bulk emails from excel using outlook. I am a newbie so need your help.

Basically I want the code to be able to start from the C3 and then get emails from C3 to C40. Then names from D3 to D40. Then Targets etc from E3-E40...and so on.

Right now I cannot see how I can change the code to make it work like I want.
ANy ideas??

Thanks in advance

Private Declare Function ShellExecute Lib "shell32.dll" _
Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, _
ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, _
ByVal nShowCmd As Long) As Long

Sub SendEMail()
    Dim Email As String, Subj As String
    Dim Msg As String, URL As String
    Dim r As Integer, x As Double
    For r = 2 To 4 'data in rows 2-4
'       Get the email address
        Email = Cells(r, 2)
        
'       Message subject
        Subj = "Recruitment Activity Statement "

'       Compose the message
        Msg = ""
        Msg = Msg & "Dear " & Cells(r, 1) & "," & vbCrLf & vbCrLf
        Msg = Msg & "Total Executive Interviews to date: " & vbCrLf & vbCrLf
        Msg = Msg & Cells(r, 3).Text & ""
        Msg = Msg & "Total Executive Interviews to date: <Exec Total [Q]>" & vbCrLf & vbCrLf
        Msg = Msg & "Remaining to hit target: <Remaining [U]> " & Cells(r, 1) & vbCrLf & vbCrLf
        Msg = Msg & "In order to achieve this you need to conduct <Remain Rate [V]> interviews each month." & Cells(r, 1) & "," & vbCrLf & vbCrLf
        Msg = Msg & "Your current Executive Interviewer rank: <Rank [T]> " & Cells(r, 1) & "," & vbCrLf & vbCrLf
        Msg = Msg & "Msg from Recruitment team here" & Cells(r, 1) & "" & vbCrLf & vbCrLf & vbCrLf

        
'       Replace spaces with %20 (hex)
        Subj = Application.WorksheetFunction.Substitute(Subj, " ", "%20")
        Msg = Application.WorksheetFunction.Substitute(Msg, " ", "%20")
                
'       Replace carriage returns with %0D%0A (hex)
        Msg = Application.WorksheetFunction.Substitute(Msg, vbCrLf, "%0D%0A")
'       Create the URL
        URL = "mailto:" & Email & "?subject=" & Subj & "&body=" & Msg
        
'       Execute the URL (start the email client)
        ShellExecute 0&, vbNullString, URL, vbNullString, vbNullString, vbNormalFocus

'       Wait two seconds before sending keystrokes
        Application.Wait (Now + TimeValue("0:00:02"))
        Application.SendKeys "%s"
    Next r
End Sub