Django ブログサイト mails.py メール処理

def comment_notification(request, comment):
    if not comment.post.author.user.email:
        return
    subject = _('COMMENT_NOTIFICATION_SUBJECT').format(comment.post.author.title_text)
    context = {
        'comment': comment,
        'url': request.build_absolute_uri(reverse('blog:detail', args=(comment.post.author.user.username, comment.post.id))),
    }
    message = render_to_string('blog/mails/comment_notification.txt', context, request)
    from_email = settings.DEFAULT_FROM_EMAIL
    recipient_list = [comment.post.author.user.email] 
    send_mail(subject, message, from_email, recipient_list)

{% load i18n %}
{% trans 'COMMENT_NOTIFICATION_MESSAGE' %}
{{ comment.post.author.title_text }}
{{ comment.post.content.title_text }}
{{ url }}

---
{% trans 'Name' %}: {{ comment.name_text }}
{% trans 'Timestamp' %}: {{ comment.created_date|date:"Y/m/d H:i:s" }}

{{ comment.comment_text }}