When I worked at the Port of Virginia, I was a little less experienced in SQL and didn’t notice this lovely little option. I of course failed to set it. Can anyone guess what happened? YEP, we got low on resources in the wee hours of the morning and SQL kicked off an Error 017-Insufficient Resources. Thousands of emails were generated and caused the Exchange server to go down as well as some other issues that arose because of this. The worst part is that all the emails had to finish processing before we could delete them from the system. I think when all was said and done there was well over 250k messages it created.
She also includes a list of important alerts; just make sure to set the delay.