When using the Send an Email to Individual Users page, the list of available users includes a number of entries that do not exist in the standard WP Users page. I have looked in phpadmin at database level to try and find these users but no luck. Does the plugin use any other tables to find users, or could there be some corruption in the wp install. The install is not multi-user. Has anyone experienced something similar and or have suggestions to track down these "non-existent" users.