Custom email notification gateway not entering in the SendNotification()

Hi,

I've created a custom email notification gateway based on this example.

The public override CMSNotificationGatewayForm GetNotificationGatewayForm() is working perfectly but I have issues with the public override void SendNotification().

For some reason that I couldn't find, the gateway is not entering in the SendNotification(), so I'm not able to send the emails. The From is filled and it working on the default Email notification gateway.

Does anyone had this issue before?

Regards,