Email Queue page inherits GlobalAdminPage:
public partial class CMSModules_EmailQueue_EmailQueue : GlobalAdminPage
That's why you can't configure access there through Permissions app. David is right, you can create something custom, that will mimic it.
Another workaround is to change base class for it, let's say to CMSAdministrationPage. However, I'd make a copy and modify it instead of original. It is not the best practice and you should evaluate a threat of expose this to less privileged users.