NServiceBus - Add a strack trace to every message send

viamutator.cs

class AddStackTraceMutator : IMutateOutgoingTransportMessages
{
    public Task MutateOutgoing(MutateOutgoingTransportMessageContext context)
    {
        context.OutgoingHeaders["StackTrace"] = System.Environment.StackTrace;
        return Task.CompletedTask;
    }
}

endpointConfiguration.RegisterMessageMutator(new AddStackTraceMutator ());

viasendoptions.cs

// Via send options
var sendOptions = new SendOptions();
sendOptions.SetHeader("StackTrace", System.Environment.StackTrace);
await context.Send(myMessage, sendOptions).ConfigureAwait(false);