GoTo or Run Code???

What I am needing is a way to jump from one section of the module to another section. It runs a validation step first then once completed I need it to run the email portion of the code. I have colored "RED" the two sections I need it to go from and to. Any help on this would be appreciated I have searched all over the forum and the net trying to find a way to make this work. This module runs when one button is pushed. Unless theres a way to assign two modules to a button in excel

Thanks
Jennifer

Sub test()
Dim requiredCells As Variant
Dim prompts As Variant
Dim i As Long

 requiredCells = Array("a3", "d3", "h3", "k3")
 prompts = Array("Date", "Accounty Manager", "Warehouse From", "Warehouse To")

 For i = LBound(requiredCells) To UBound(requiredCells)
     If Range(requiredCells(i)).Value = vbNullString Then
         Range(requiredCells(i)).Value = userInput(prompts(i))
         If Range(requiredCells(i)).Value = vbNullString Then Exit Sub: Rem Cancel pressed
     End If
 Next i

End Sub
Function userInput(promptString As Variant) As String
Do
    userInput = Application.InputBox("You must enter a " & promptString, Type:=2)
    If userInput = "False" Then userInput = vbNullString: Exit Function
Loop Until userInput <> vbNullString
End Function

Sub Mail_workbook_Outlook_2()
'Working in 2000-2007
    Dim wb1 As Workbook
    Dim wb2 As Workbook
    Dim TempFilePath As String
    Dim TempFileName As String
    Dim FileExtStr As String
    Dim OutApp As Object
    Dim OutMail As Object
 
    Set wb1 = ActiveWorkbook
 
    If Val(Application.Version) >= 12 Then
        If wb1.FileFormat = 51 And wb1.HasVBProject = True Then
            MsgBox "There is VBA code in this xlsx file, there will be no VBA code in the file you send." & vbNewLine & _
                   "Save the file first as xlsm and then try the macro again.", vbInformation
            Exit Sub
        End If
    End If
 
    With Application
        .ScreenUpdating = False
        .EnableEvents = False
    End With
 
    'Make a copy of the file/Open it/Mail it/Delete it
    'If you want to change the file name then change only TempFileName
    TempFilePath = Environ$("temp") & "\"
    TempFileName = "Copy of " & wb1.Name & " " & Format(Now, "dd-mmm-yy h-mm-ss")
    FileExtStr = "." & LCase(Right(wb1.Name, Len(wb1.Name) - InStrRev(wb1.Name, ".", , 1)))
 
    wb1.SaveCopyAs TempFilePath & TempFileName & FileExtStr
    Set wb2 = Workbooks.Open(TempFilePath & TempFileName & FileExtStr)
 
    Set OutApp = CreateObject("Outlook.Application")
    OutApp.Session.Logon
    Set OutMail = OutApp.CreateItem(0)
 
    On Error Resume Next
    With OutMail
        .To = "fizgigjk@yahoo.com"
        .CC = ""
        .BCC = ""
        .Subject = "This is the Subject line"
        .Body = "Hi there"
        .Attachments.Add wb2.FullName
        'You can add other files also like this
        '.Attachments.Add ("C:\test.txt")
        .Send   'or use .Display
    End With
    On Error GoTo 0

    wb2.Close SaveChanges:=False
 
    'Delete the file
    Kill TempFilePath & TempFileName & FileExtStr
 
    Set OutMail = Nothing
    Set OutApp = Nothing
 
    With Application
        .ScreenUpdating = True
        .EnableEvents = True
    End With
End Sub
End Sub

To call another macro from the 1st macro is easy

Sub Macro1()
   Call Macro2
   if range("a1").value = 2 then
        call macro3
   end if
End Sub

Macro1 starts to run, calls macro2
after MAcro2 runs macro1 continues running from the next command after it called macro2

Note you do not need to use the word Call in front of the macro name

My first guess would be a requirement is not being met? In this section of your code you use the same "If" statement twice.

 For i = LBound(requiredCells) To UBound(requiredCells)
     If Range(requiredCells(i)).Value = vbNullString Then
         Range(requiredCells(i)).Value = userInput(prompts(i))
         If Range(requiredCells(i)).Value = vbNullString Then Call Mail_workbook_Outlook_2
    End If
 Next i

I would think that the string "If Range(requiredCells(i)).Value" is not evaluating to "vbNullString".

A second look I see that you reset your "If" satement to "If Range(requiredCells(i)).Value = userInput(prompts(i))", then the second "If" statement would not evaluate to "vbNullString" and the call statement would be ignored.