Correcion en envio de correos en ventas

Ventas/Ventas.aspx.vb

@@ -592,12 +592,12 @@ Partial Class Ventas
     End Property
     Private ReadOnly Property Mail As String
         Get
-            Return ViewState("Mail").ToString()
+            Return IfNull(ViewState("Mail"), "").ToString()
         End Get
     End Property
     Private ReadOnly Property MailCC As String
         Get
-            Return ViewState("MailCC").ToString()
+            Return IfNull(ViewState("MailCC"), "").ToString()
         End Get
     End Property
     Private ReadOnly Property CveVenta As Integer
@@ -21148,17 +21148,17 @@ Partial Class Ventas
         Dim ObjMail As New ClsSisMail()
         Dim ResultadoMail As Integer = 0
 
-
-
         Dim CorreoDestino As String = ""
 
+        If Me.Mail.Trim.Length > 0 Then
+            CorreoDestino = Me.Mail
+        End If
+
         If CorreoContactoCRM.Trim.Length > 0 Then
             CorreoDestino = CorreoContactoCRM
             ViewState("MailCC") = ""
         End If
 
-
-
         Try
 
             Dim Asunto As String = String.Empty