I would like to use Google Chat as our inter-company and client / partner hub for quick communication. Email is still relevant, but the majority of communications today, take place via chat applications both on my pc and on my phone. However, for our needs, it is essential that the process for external users to join via invite is critical. If they are required to create a new Google account, this is a substantial barrier and may make things more difficult than the alternatives such as Slack or even RocketChat.
In all chat environments, there is an account creation requirement, but the process for those other applications is much easier and does not require a gmail account. For a business trying to communicate with clients, leads, partners and vendors, not all of them use Google and many of them do not want to be required to create a Gmail account. I would love to see a simple registration process specifically designed for Google Workspace Chat that allows external users to participate. Without this, the tool is not viable for us.