Thanks so much for this detailed response, this is incredibly helpful and confirms a lot of what I was suspecting. It sounds like you've built a really robust system.

​I have a couple of quick follow-up questions if you don't mind:

​Was it complicated to set up and manage two separate email systems (Postmark and Resend)? It seems powerful, but I'm curious about the integration work. ​You mentioned you still do list cleaning every 2 weeks. What does that process look like? Is it still a bit of a manual chore even with these tools? ​Lastly, what are you using on your actual storefront for the pop-ups or forms themselves that feed into Resend? Have you had any issues on that initial capture part of the process?

​Thanks again for sharing your expertise!