Add extra content after mail content:
This hook is called just after fetching mail template
Hook locations:
Hook type: action
Located in:
This hook has an $array_return
parameter set to true
(module output will be set by name in an array, see explaination here).
Hook::exec(
'actionEmailAddAfterContent',
[
'template' => $template,
'template_html' => &$templateHtml,
'template_txt' => &$templateTxt,
'id_lang' => (int) $idLang,
],
null,
true
)