In the late 2000s there was a push by a lot of businesses to not print emails and people use to add a ‘Please consider this environment before printing this email.’
Considering how bad LLMs/‘ai’ are with power consumption and water usage a new useless tag email footer should be made.
Text generation uses hardly any energy at all, though. Most phones do it locally these days. In fact, it likely takes less energy to generate an email in 5 seconds than it would take for you to type it out manually in 5 minutes with the screen on the whole time.