In many jurisdictions (EU's GDPR, California's CCPA), scraping personal data (usernames, phone numbers, messages) from a private platform without consent is illegal. If you use a self bot to harvest data from a Telegram group and sell it, you could face fines or lawsuits.
Telegram Bot API Pricing: Free API & Entry+ Plans for 2026 - Chat Data self bot telegram
You may have heard the term in Telegram circles. A self bot is essentially a user account (not a normal bot account) that runs automated scripts to perform actions like: In many jurisdictions (EU's GDPR