我创建了一个函数来为自定义帖子发送邮件（法语），这是可行的，但主题是用html编码的。

我这样做：

$get_title = get_the_title($ID);
wp_mail("[email protected]","new article : ".$get_title,"The message is OK with é è à",$headers);

我的电子邮件来源如下

X-Mailer: PHPMailer 5.2.14 (https://github.com/PHPMailer/PHPMailer)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

我得到了这个主题«新文章：it’s不正常»。

wp_mail("[email protected]","new article : ".html_entity_decode($get_title),"The message is OK with é è à",$headers);

wp_mail("[email protected]","new article : ".$post->post_title,"The message is OK with é è à",$headers);