The people here a question arose, at the moment, the site of food delivery to opencart. After ordering, the restaurant received a letter to yandex mail about that, saying that the order was received. And then there is a problem, alerts that received a letter in the mail, the first one is visible (use the yandex browser ), and disappears very fast, and the second sound is very quiet and not noticeable. The question arises what can be done. Maybe there is a service, or plugins that will allow the notification sound to make more visible and long and for example, to infa about the arrival of the letter had not been cleaned in a few seconds? Maybe there are some services where you can send these letters? In General prompt, what can.