The system allows you to rank these rules in order of importance - ranging from 1 to 10, with 1 being the most important and 10 being the least important. More important rules will be evaluated before the less important rules.
If you have several rules set to a ranking of #1 (and applied to the same email account), the system will randomly select one of the rules to route that email. For this reason, it is important to rank them accordingly.
Tip: When using weekend auto-responders or after-hour auto-responders, make sure to set them at a higher ranking than any other rules to be sure they kick in first and your response is sent.