How to Ascribe a Certain Value Per Email Address

Every email address is basically an asset should live on my balance sheet and not just my income statement. I hate Clavio for actually understanding how valuable is that email lead? There's nowhere to find, right? And then I'm trying to go back and think through, okay, what's my opt in rate? How many of those do I get? How much can I monetize those people? Right)? Every day we get it better. But you need to be relentless on your math, relentless on your analytics, relentless on understanding what it is you're getting for what you're paying. You don't fully understand your return until you quantify it all.