A little context here: this is an engagement program where we'd like leads in a particular stream to be marked as a success if they have opened up two or more different emails. This sounded simple enough until I started trying to setup the smart lists for it.
For example, say I have 2 "Opened Email" filters, each with the same list of emails, then I'm assuming the lead would qualify for both conditions even if they only opened one:
This is possible if you account for every combination of emails they could open (#1 & #3, #2 & #3, etc...) but that's not maintainable when adding more emails to the stream.
Is there some constraint within Marketo that I'm missing? Would love to hear thoughts on the best way to approach this, thanks!