Telegram
What can do this bot?Telegram bot to get everyone's attention in a group chat. Like @everyone in other messaging applications. Users must opt-in using /in to receive mentions. Users can also opt-out of receiving mentions at any time using /out
Hey! I can help notify everyone in the group when someone needs them. Everyone who wishes to receive mentions needs to /in to opt-in. All opted-in users can then be mentioned using /everyone
Команды бота
Все команды должны начинаться с символа «/».
Телеграм продвижение 
Юрист Pravoved.ru