public/templates/emails/newsletter_plaintext.tpl
{body}
[[email:closing]]
{title}
===
<!-- IF override -->
[[newsletter:unsub.override]]
<!-- ELSE -->
[[newsletter:unsub.info]]
[[email:unsub.cta]]: {url}/user/{userslug}/settings#newsletter
[[email:notif.post.unsub.one-click]]: {unsubUrl}
<!-- ENDIF override -->