Thanks for the response.The epgkeywords plugin isn't related to the RS portal and it's very basic. No, there is no way to stop it emailing matches to you.
If you use the Remote Scheduling Portal to do the same thing (via the Autos option) however, it is much more flexible and won't remind you about the same thing twice.
Using the Calendar function in the rs EPG results in the day previous to the one chosen to be displayed. Anybody else noticed this?