GMail and cyclical challenges as they make friends?

I am a supporter of simplicity and therefore to support his organization trying to use is already used by me for purposes other tools. In particular, in order to deal with cases, I use my box GMail. He has a couple of drawbacks, one of which is: the letters can not be bound by the time or make the cyclic. But this disadvantage can be eliminated by google Calendar.
Eliminating the lack of recurrence or time reference is to create activities google CalendarAnd installation of necessary properties. In particular, to remind ourselves of the need to pay an ISP account can be set up around the event as follows:

Note that selecting "All day," I agree that notification will come the day before.

It only remains to organize the second part: GMail customize the filter so that all messages from calendar followed by the label of your Next Actions GTD system. For critical events can be activated and SMS notification: it's free.
This approach is not without drawbacks, but it definitely works for me, it may be useful to you.

google Calendar, GMail.