I forgot if I receive a message like that in my telegram before but I do get a lot of these in other social media sites that I use. My inbox are full of these. It's kinda annoying only that they are forcing the people to join them but they don't know that these kind of approach are likely to be successful because the first impression that we can make is they are a scam. If they want to prove that they are legit then they must only do promotions the traditional way and not by spamming/blasting people's inboxes.

I think there's another purpose of groups like this other than scamming and that is they want to manipulate a certain coin for them to earn an extra income.