They don't. But let's say you are: - on holidays - sleeping - sick - on a party - etc. Having setup alerts would still have reduced the bill. Still assu

They don't. But let's say you are: - on holidays - sleeping - sick - on a party - etc. Having setup alerts would still have reduced the bill. Still assuming that something like 2h pass before you can react to an email is quite reasonable which would still have been ~150$ on the big day, which is ~6x of the normal _monthly_ cost in 2h... And that is assuming the alerts are send real-time, which they are not.