On: Why does email development have to suck? – Explain...

[seba_dos1]

How does that make any sense when those are often sent from no-reply addresses that are routed nowhere?

[yakshaving_jgt → seba_dos1]

I think response rate is meant more generally in this context. It doesn't necessarily literally mean an email in response. I think more typically it means the recipient following the call to action link in the email.