I could not find any way to configure some triggers to send notification via email, others via SMS or both. It would be nice to specify this at trigger level. Also nice would be to define escalation actions at trigger level but not based only on time also on recursion of the trigger (like, steps dependent on the frequency of the trigger status change - x changes per y update intervals results in an action, t changes per y update interval results in another action or, status not changed for the last x update intervals results in an action, status not changed for the last t update intervals results in anoter action).

The current global action definitions should be kept as defaults, for triggers that do not have this detailed level of definition.