django-gov-notify, a GOV.UK Notify flavoured Django email backend

django-gov-notify provides Django integration with the GOV.UK Notify service for sending emails and SMS messages. Python Client Documentation.

This is implemented as a custom Django email backend. It presents a similar internal API to standard Django email backends, but with some restrictions:

• GOV.UK Notify emails are sent to one recipient each. CC: and BCC: fields are not supported.
• A single email 'message' with multiple recipients will result in multiple individual API calls to GOV.UK Notify, each message being sent to a single recipient. The backend will still report back 1, as per Django's default behaviour.
• Attachments are not (at the moment) supported.
• Custom headers are not supported.
• To configure a 'reply-to' address, you must first configure such an address in the GOV.UK Notify admin interface.
• The 'from' address field is not supported. This must be configured within the GOV.UK Notify admin interface.
• Preformatted emails are expected to be configured in the service admin dashboard as Markdown templates with placeholders.
• The email body is interpreted as very limited Markdown. On testing, it seems that variables are not interpreted as markdown, or maybe mangled, e.g. _test_ was emailed as *test*.

Compatibility

django-gov-notify supports:

• Python 3.6, 3.7, 3.8, and 3.9
• Django 2.2, 3.1 and 3.2

Installation

Using pip:

$ pip install django-gov-notify

Using Poetry

$ poetry add django-gov-notify

Configuration

In your Django project's settings:

EMAIL_BACKEND = "django_gov_notify.backends.NotifyEmailBackend"

You will need at least one email template ID, with a plain template:

Subject: ((subject))
Body: ((body))

Set the Django settings:

• GOVUK_NOTIFY_API_KEY (NB not GOV_UK…)
• GOVUK_NOTIFY_PLAIN_EMAIL_TEMPLATE_ID

This plain template ID setting, and template IDs passed to the NotifyEmailMessage class, use string representations of the UUID keys.

Usage

Sending an email using a template

Configure the template in the GOV.UK Notify dashboard:

Subject: Message about ((topic))
Body: Hello ((first name)), your reference is ((ref number))

Create an email message, supplying the template ID and a personalisation dictionary (this should also include any variables defined in the template subject):

from django_gov_notify.message import NotifyEmailMessage

message = NotifyEmailMessage(
    to=["[email protected]"],
    template_id="43573f75-80e7-402f-b308-e5f1066fbd6f",
    personalisation={
        "topic": "The Prisoner",
        "first name": "Patrick",
        "ref number": "6",
    },
)
message.send()

Note that in this case a subject and body are not required, nor permitted, because the personalisation dict won't know how to do anything with them.

Sending an email using the default (blank) template

This assumes you have configured a blank template with the parameters

Subject: ((subject))
Body: ((body))

from django_gov_notify.message import NotifyEmailMessage

message = NotifyEmailMessage(
    subject="Test subject", body="Test message content", to=["[email protected]"]
)
message.send()

Note that in this case a subject and body are required, and you must not pass the template_id or personalisation kwargs.

Sending an email using the send_mail shortcut function

Use it in the normal fashion, including a 'from' address that will be discarded:

from django.utils.mail import send_mail

send_mail("Subject", "Message content", "[email protected]", ["[email protected]"])

This will use the blank template ID configured as settings.GOVUK_NOTIFY_PLAIN_EMAIL_TEMPLATE_ID. Attachments, custom headers, and BCC recipients are not supported.

Contributing

To work on this repository locally:

• install: poetry install
• run tests: poetry run python runtests.py