How to create triggers based on data values?

Here's my use case: 

We get some regular test tickets as part of an automated testing process run by a large customer / software company. I just want to set a rule so "every ticket from user@email.com should be closed or deleted automatically"... like a gmail filter, but applied to our helpdesk.  

I think there's a usability problem because I can't figure out how to do this. It seems like I should be able to do this through Business Rules (screenshot below), but the interface just teases me with a "present" / "not present" option. I can't figure out where to match an actual data value (in this case, an email address of the automated test user). 

Can someone please tell me how to do this or confirm if this is actually a product limitation?  In case it helps, we're on the Growth Suite. 

Thanks, 

Tom