How to: No Other Condition Fulfilled Fo This

I have a form which is conditionally sent to three different email conditions based on keywords (e.g. books or movies). The form is catching submissions which say movie should go to email X. However, I want submissions which contain none of the defined keywords to then go to email Z. Is there an easy way to do this other than having *every* single condition listed in the other conditional fields put in for email Z? I have like 50 keywords defined and it'd be frustrating to have to keep those updated all the time in email Z by saying "If NOT any of these keywords..."

Unfortunately, that is the only way, otherwise, how could it be possible to identify if the field does not contain any of the keywords already listed?

You could create a new notification, with no conditions applied on it, so it can be sent to email Z by default, regardless the keyword entered.