Overall, Notisend delights users. It offers not only traditional messaging methods like SMS and emails but also a recently popular channel—push notifications. These notifications appear in the corner of the screen when the user allows them to show in the browser. And what’s nice is that this functionality is offered for free, without any of the limitations that usually accompany free services, such as sending limits or service advertisements. The other features are paid. The prices here are average, just like those of competitors. Don’t be fooled by enticing low SMS rates; this is a common marketing tactic with prices "starting from." In reality, average operator rates are taken, a markup is added, and the final cost is established. You can indeed save with regional operators, but when sending messages to large companies like MTS, Megafon with Yota, Beeline, and Tele2, the prices remain on par. On average, it’s about 2 rubles per SMS, with a slight decrease for MTS, likely due to partnership agreements. However, there’s a great opportunity: you don’t have to send SMS at those rates when a messenger is available. Currently, only Viber is supported, but I hope they will add others in the future, like WhatsApp and Telegram. The advantage is that I pay about 2 rubles for SMS, while for Viber it’s less than 0.5 rubles. That’s a 4-fold savings for a similar result. Although there is a slight risk that a message in a messenger might be ignored since SMS are taken more seriously. And finally, standard email newsletters. There’s not much to say here; I haven’t used them as I consider them almost useless for promotion, at least in my segment. Perhaps it’s relevant for B2B, but definitely not for B2C.