I have two G Suite domains and I'm utterly and absolutely confused.
- in one domain I have "Chat" just under "Important" messages. But somehow I cannot send any chats. I see only chats from 2018 or so (when they shutdown Gmail Chat). The cool thing is that they look like read email messages. But I cannot send any chat.
- in other domain I have "Hangouts" but no Chat.
I hope this real world example illustrates why parent comment is correct when asking "Which one?".
Messages sent in Google Hangouts on my own domain today show up in my email under the "Chats" label, so this functionality is still working -- if you use the right/latest app, I guess.
I can understand Facebook or WeChat building everything into the same app, making the app into an inner platform within the platform, but when Google already control the outer platform it doesn't make much sense.
If Chat is built in, I don't see it yet.
We pay for gsuite and we pay for slack. google chat is no where yet.