As the project admin, you are the primary contact point for your project, and will receive all inquiries and correspondence from Slated, or from Slated members, regarding your project.
By default, any Slated member can contact you through your project profile page on Slated, but you can change that within the project settings. For example, you can set it to only allow people or companies who fit the criteria you are looking for to contact you, or not allow anyone to contact you.