[3np]

I hope you’re not suggesting inserting and relying on tracking pixels and other unreliable junk into outgoing emails in order to measure.

Besides, guess what, many times, “engagement” is precisely what I don’t want to be coerced or manipulated into doing.

Cursing while clicking around your funneling website to find a place to do a GDPR data delete request and eventually giving up while filing your sender as spam also counts as engagement. Whereas plaintext email is way less likely to trigger that response.