FastNetMon Advanced has complete support for native Telegram alerts for ban and unban actions for blackhole mode. It’s available starting from 2.0.329.
To use notifications, you need to create a bot in Telegram. To create bot, you will need to contact a special @BotFather account in Telegram and then follow the instructions.
After this, you will need to get a user id (positive integer number) to send alerts to a specific user account or group/chat ID (negative integer number) to send alerts to a group which has multiple people. It can be done using a web client for Telegram. After successful authentication, you will see these numbers in the browser's address bar (-1124297600 in the example) when you open private messages with a user or open a specific chat room:

After that, you can use these numbers for the field telegram_notifications_recipients.
You can enable Telegram integration using the following options:
sudo fcli set main telegram_notifications_enabled true sudo fcli set main telegram_notifications_add_simple_packet_dump true sudo fcli set main telegram_notifications_bot_token secret_token sudo fcli set main telegram_notifications_recipients 12345 sudo fcli set main telegram_notifications_recipients -12345 sudo fcli commit
Example notification:


