why dont you create a SLACK chat like many communities do, once you have done that then you can connect your Slack to other Slacks from various projects in crypto with a
channel that is shared among all participating projects.
In each of the project's Slack that participates, there will be a
channel which is shared among every Slack..
The idea behind the Shared Slack Network (SSN) is connecting
communities from different projects in order to increase
communication, awareness and education. Furthermore, this platform
can also be used for promotion and expanding each projects' user-base
to the other participants of the SSN.
Check the link how to do it, these will bring a lot more people to know about your project and it's free
https://bt.irlbtc.com/view/1357996.msg13821543#msg13821543