Logging to particular levels + buffering smtpappender

[electroteque]

Hi there, I was wondering if there was a possibility of being able to 
log to file all levels except the debug level which i want the console 
only to display ? Also how is it possible to buffer all the logs going 
to smtp appender and send it once the program has finished or exiting 
with an error ? I only one to recieve one email not many really. Let me 
know.