Hello, are we able to bulk invite people from other Telegram channels/groups to our Telegram channel? Do you know any programs or websites about it?
I am not aware of any such tool if its exists even, but it will be unethical to make people enter in your group without first asking them.
You should not violate the moral and privacy values by using such tools.
Well, this is very common on telegram that having a service of adding massive members without knowing them. If someone accepted this kind of offer, there is a possibility that your group might be blocked by the telegram staff by reacting to those randomly adding people that unwillingness and hitting spam and then leave. This service doesn't make sense because if you were active on telegram you will make annoy those groups and wondering who is inviting you into that group.