When you create a space, we assign a random but very cool built-in domain to your space which will look something like spring-leaf.coapp.io
However, to personalize your domain click on your profile picture in the upper right corner and select Manage. Then click Settings at the bottom left and choose Domain. Now change your coapp.io-domain (example: mycommunity.coapp.io) and click save. If the name is still available this will be your community's new go-to domain.
If you want to use your own domain like community.YOURDOMAIN.com that is also possible, of course. Just reach out to our support team to get things started.