How do I check if a number is on Telegram?
Save the numbers in a .txt file, one per line with the country code, such as +14155551234, then upload it to TalismanLeads or send it to the Telegram bot. Each number comes back registered or not registered, at $3.20 per 10,000 numbers. Nobody is messaged, and lists under 2,000 numbers are billed as 2,000.