Hi Bastien, I had a look at org-notify.el. It's over engineered for my need. If you recall I submitted a patch that added warntime on the header. It's not pretty but it works for me.
I could use properties instead. For example: ** an appointment with a reminder 5 minutes before 10:00 SCHEDULED: <2012-07-16 Mon 10:00> :PROPERTIES: :WARNTIME: 5 :END: Would you integrate such a functionality? I might code it if I find the time. Take care, -- Ivan Kanis http://ivan.kanis.fr A great teacher is one who realizes that he himself is also a student and whose goal is not dictate the answers, but to stimulate his students creativity enough so that they go out and find the answers themselves. -- Herbie Hancock