The present invention discloses a mail sending method and an email system and relates to the field of internet communications. Accelerated frame rate rendering priority values assigned to the individual prioritized video frames of the video advertisement are identified. The casting uses an aggregate disposable mold that can be removed from the as-cast part. The detection system receives the beacon responses from the user device, and using a predictive or trained classifier model, predicts the topography based on the information received. According to an additional embodiment of the invention, a vegetable ash, in particular a rice chaff ash, can be added to the blanket material.