I use a Mac, but most promotion programs are designed for Windows. Of course, you can create your own server, but why complicate your life when there are such services? Not only is this solution perfect for me, but there's also no need to keep my Mac on for inviting and sending messages. The functionality is the same as 99% of similar software. There’s inviting (gathering an audience from competitors' channels and inviting them to mine) and a mailing service. Everything can be precisely configured to achieve the desired results. All Telegram algorithms are followed during use, so the service is safe. And its price is quite reasonable (plus there’s a 5-day trial).
