The converse lesson here is also important: If you don't want a response to your email, barrage the recipient with text.
But then, if you don't want it to be read, why are you sending it?
"If I send my email I'm fulfilling my responsibilities but if they don't answer I'm avoiding extra work."
Why isn’t it done yet? Because we’ve been waiting on X to address Y and after three weeks of reminders there’s been to reply or action. It’s X’s fault, not mine, I communicated.