I have a multisite network. I installed this plugin at the network level and network activated it. I placed the code in the wp-config.php file as directed. HOWEVER, I cannot see ANY configuration or testing capabilities for this plugin anywhere at the Network level. I know it is not working, as I have tried sending emails to people who were added as users. The email did not go through and the users was thus not added. You state that configuration and test capabilities should appear under the Network Configuration/Network Settings at the network level. No go. Please help.