A Django app that allows you to log email activities and send mail asynchronously, complete with template support.
Project description
Django Post Office is a simple app that allows you to send email asynchronously in Django. Supports HTML email, database backed templates and logging.
post_office is implemented as a Django EmailBackend so you don’t need to change any of your code to start sending email asynchronously.
Dependencies
Installation
Install from PyPI (or you can manually download it from PyPI):
pip install django-post_office
Add post_office to your INSTALLED_APPS in django’s settings.py:
INSTALLED_APPS = (
# other apps
"post_office",
)
Run syncdb:
python manage.py syncdb
Set post_office.EmailBackend as your EMAIL_BACKEND in django’s settings.py:
EMAIL_BACKEND = 'post_office.EmailBackend'
Quickstart
To get started, make sure you have Django’s admin interface enabled. Create an EmailTemplate instance via /admin and you can start sending emails.
from post_office import mail
mail.send(
'from@example.com',
['recipient1@example.com', 'recipient2@example.com'],
template='welcome_email', # Could be an EmailTemplate instance or name
context={'foo': 'bar'},
)
The above command will put your email on the queue so you can use the command in your webapp without slowing down the request/response cycle too much. To actually send them out, run python manage.py send_queued_mail. You can schedule this management command to run regularly via cron:
* * * * * (/usr/bin/python manage.py send_queued_mail >> send_mail.log 2>&1)
Usage
mail.send()
mail.send is the most important function in this library, it takes these arguments:
Argument |
Required |
Description |
---|---|---|
sender |
Yes |
email address, display name is allowed (John <john@example.com>) |
recipients |
Yes |
list of recipient email addresses |
template |
No |
EmailTemplate instance or name |
context |
No |
A dictionary used when email is being rendered |
subject |
No |
Email subject (if template is not specified) |
message |
No |
Email content (if template is not specified) |
html_message |
No |
Email’s HTML content (if template is not specified) |
priority |
No |
high, medium, low or now (send immediately) |
Here are a few examples.
If you just want to send out emails without using database templates. You can call the send command without the template argument.
from post_office import mail
mail.send(
'from@example.com',
['recipient1@example.com', 'recipient2@example.com'],
subject='Welcome!',
message='Welcome home, {{ name }}!',
html_message='Welcome home, <b>{{ name }}</b>!',
context={'name': 'Alice'},
)
post_office is also task queue friendly. Passing now as priority into send_mail will deliver the email right away (instead of queuing it), regardless of how many emails you have in your queue:
from post_office import mail
mail.send(
'from@example.com',
['recipient1@example.com'],
template='welcome_email',
context={'foo': 'bar'},
priority='now',
)
This is useful if you already use something like django-rq to send emails asynchronously and only need to store email related activities and logs.
Custom Email Backends
By default, post_office uses django’s SMTP EmailBackend. If you want to use a different backend, you can do so by changing POST_OFFICE_BACKEND.
For example if you want to use django-ses:
POST_OFFICE_BACKEND = 'django_ses.SESBackend'
Caching
By default, post_office will cache EmailTemplate``s if Django's caching mechanism is configured. If for some reason you want to disable caching, you can set ``POST_OFFICE_CACHE to False in settings.py:
## All cache key will be prefixed by post_office:template:
## To turn OFF caching, you need to explicitly set POST_OFFICE_CACHE to False in settings
POST_OFFICE_CACHE = False
## Optional: to use a non default cache backend, add a "post_office" entry in CACHES
CACHES = {
'post_office': {
'BACKEND': 'django.core.cache.backends.memcached.PyLibMCCache',
'LOCATION': '127.0.0.1:11211',
}
}
Management Commands
send_queued_mail - send queued emails, those that aren’t successfully sent they will be marked as failed.
cleanup_mail - delete all emails created before an X number of days (defaults to 90).
You may want to set these up via cron to run regularly:
* * * * * (cd $PROJECT; python manage.py send_queued_mail >> $PROJECT/cron_mail.log 2>&1) 0 1 * * * (cd $PROJECT; python manage.py cleanup_mail --days=30 >> $PROJECT/cron_mail_cleanup.log 2>&1)
Testing
To run post_office’s test suite:
`which django-admin.py` test post_office --settings=post_office.test_settings --pythonpath=.
Changelog
Version 0.3.0
IMPORTANT: added South migration. If you use South and had post-office installed before 0.3.0, you may need to manually resolve migration conflicts
Allow unicode messages to be displayed in /admin
Introduced a new mail.send function that provides a nicer API to send emails
created fields now use auto_now_add
last_updated fields now use auto_now
Version 0.2.1
Fixed typo in admin.py
Version 0.2
Allows sending emails via database backed templates
Version 0.1.5
Errors when opening connection in Email.dispatch method are now logged
Project details
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