I used to work in telecoms about eight years, and loved one of our SMS providers, simply because they'd send an email the <i>instant</i> an issue was detected on their end. This helped us, in turn, to communicate with our customers, and also not waste time investigating why messages weren't being received at whoever's end.<p>Compared to another supplier we were hooked up to, who quite often we'd be the ones informing their support staff that there was an issue. Utterly frustrating, and self-defeating as it meant we'd sell towards to the former provider whenever possible just for the fewer headaches alone.