How to send Email without using settings.py ? (smtp parameters in database)

Question

I would like to be able to send emails with django but without using the email parameters in settings.py. (EMAIL_HOST, EMAIL_USE_TLS, EMAIL_HOST_PASSWORD, etc ...)

These parameters are stored in db because they can be different depending on the user. How to use these parameters in base to send emails and not those in settings.py ?

class EmailThread(threading.Thread):
    """
    Class email (Thread)
    """
    def __init__(self, subject, html_content, recipient_list):
        self.subject = subject
        self.recipient_list = recipient_list
        self.html_content = html_content
        threading.Thread.__init__(self)

    def run (self):
        msg = EmailMessage(self.subject,
                           self.html_content,
                           settings.EMAIL_HOST_USER,
                           self.recipient_list)
        msg.content_subtype = "html"
        msg.send()

def send_html_mail(subject, html_content, recipient_list):
    """
    send an email asynchronous
    """
    EmailThread(subject, html_content, recipient_list).start()

I can get the parameters using: email_params = EmailParameter.objects.get(user=request.user)

class EmailParameter(models.Model):
    email_use_tls = models.BooleanField(_("email use tls"), default=True)
    email_use_ssl = models.BooleanField(_("email use tls"), default=False)
    email_host = models.URLField(_("email host"), max_length=200)
    email_host_user = models.CharField(_("email host user"), max_length=200)
    email_host_password = models.CharField(_("email host password"), max_length=200)
    email_port = models.PositiveIntegerField(_("email port"))
    default_from_email = models.EmailField(_("default from email"), max_length=200)
    signature = models.TextField(_("signature"))
    user = models.ForeignKey(
        User,
        verbose_name = _("user"),
        related_name = "user_email_parameter",
        on_delete=models.CASCADE
    )

Where is `send_html_mail` called? You will need to pass `request` into this. — Lewis, Dec 04 '21 at 10:13
Does this answer your question? [EmailBackend for sending email through multiple SMTP in Django](https://stackoverflow.com/questions/13590518/emailbackend-for-sending-email-through-multiple-smtp-in-django) — Abdul Aziz Barkat, Dec 04 '21 at 10:22

score 1 · Answer 1 · answered Dec 04 '21 at 10:21

Just move all necessary parameters inside class instance and use it instead of settings.XXX:

class EmailThread(threading.Thread):
    def __init__(self, subject, html_content, recipient_list, email_host_user):
        self.subject = subject
        self.recipient_list = recipient_list
        self.html_content = html_content
        # set parameter to instance
        self.email_host_user = email_host_user
        threading.Thread.__init__(self)

    def run (self):
        msg = EmailMessage(self.subject,
                           self.html_content,
                           # use instance parameter
                           self.email_host_user,
                           self.recipient_list)
        msg.content_subtype = "html"
        msg.send()

# add email_host_user to be able set it when call mail send process
def send_html_mail(subject, html_content, recipient_list, email_host_user):
    EmailThread(subject, html_content, recipient_list, email_host_user).start()

Now you able to send mail with custom parameters:

e_h_u = EmailParameter.objects.get(user=request.user).email_host_user
send_html_mail(subject, html_content, recipient_list, e_h_u)

How to send Email without using settings.py ? (smtp parameters in database)

1 Answers1