1. To receive notifications on your shipments through Telegram you need to click this link @YsellNotifyBot from any device with installed Telegram, you'll be proposed to open Telegram with the chat bot or it will open automatically. Next step is to send “/start” message in case it didn't happen itself. Anyway you should be shown such a message with your ID by bot:

2. Further step is to go to Ysell and select a company that Telegram notifications will be sent from.

You start getting notifications in a few minutes after saving.

To cancel notifications just delete information from Telegram chat id field