from django.core.mail import EmailMessage

def make_comment_email(comment):

    subject = f'Re: {comment.candidate.name}'

    signature = comment.user.get_full_name() or comment.user.username

    sender = f'{signature} <compliance@sfconservancy.org>'

    to = ['nutbush@lists.sfconservancy.org']

    body = f'{comment.message}\n\n--\n{signature}'

    headers = {'Message-ID': comment.email_message_id}

    if in_reply_to := comment.in_reply_to():

        # From my testing, both "In-Reply-To" and "References" headers trigger

        # email threading in Thunderbind. Sticking to "In-Reply-To" for now.

        headers['In-Reply-To'] = in_reply_to

    return EmailMessage(subject, body, sender, to, headers=headers)