wanjunlei 3.1的ui目前只支持全局通知模式，可以参考这个 https://kubesphere.io/docs/cluster-administration/platform-settings/notification-management/configure-email/ 如果需要按项目告警，需要手动生成tenant类型的config和receiver，user为项目成员的名称，可以看看这个 https://github.com/kubesphere/notification-manager/tree/release-1.0#deploy-notification-manager-in-kubesphere-uses-workspace-to-distinguish-each-tenant-user
