Добавить в Tools > Netwatch скрипты отправки:
UP:
/tool fetch url="https://api.telegram.org/bot5416297136:AAHAx3p-yFsDr4nG8h5YNBI6nRyPeXXXXX/sendMessage?chat_id=-100158142342&text=\F0\9F\9F\A2 <b>Server</b> is UP&parse_mode=html" keep-result=no
DOWN:
/tool fetch url="https://api.telegram.org/bot5416297136:AAHAx3p-yFsDr4nG8h5YNBI6nRyPeXXXXX/sendMessage?chat_id=-100158148142342&text=\F0\9F\94\B4 <b>Server</b> is DOWN&parse_mode=html" keep-result=no
Результат:
