diff --git a/CM.TransactionalEmail/SendEmailOptions.cs b/CM.TransactionalEmail/SendEmailOptions.cs
index 5866214..46afdb2 100644
--- a/CM.TransactionalEmail/SendEmailOptions.cs
+++ b/CM.TransactionalEmail/SendEmailOptions.cs
@@ -8,7 +8,7 @@ public class SendEmailOptions
   public required Sender Sender { get; set; }
   public required EmailContent Content { get; set; }
   public long? GroupId { get; set; }
-  public TrackingOptions? Tracking { get; set; }
+  public required TrackingOptions Tracking { get; set; }
   public IEnumerable<CustomAttribute>? AdditionalHeaders { get; set; }
-  public long? Queue { get; set; }
+  public required long Queue { get; set; }
 }
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