Bot behavior in groups is depended on bot’s privacy mode.
- ‘Enable’ - your bot will only receive messages that either start with the ‘/’ symbol or mention the bot by username.
- ‘Disable’ - your bot will receive all messages that people send to groups.
You can chat with @botfather to update privacy mode for your bot at any time.
Bot with Enable Privacy Mode
If the bot was the last bot to send a message to the group
It will receive all messages start with the ‘/’ symbol.
How to ensure my bot receive message in group chat
You will need to call the bot explicit Commands.
You can chat with @botfather to create explicit commands for your bot.
Bot with Disable Privacy Mode
I don’t recommend you to disable bot privacy mode. But if you do, your bot will receive and response to all messages sent.