Sorry to say mate but maybe... I’d usually pop that on a queue and get a separate service to pick it up... maybe that’s what you’re doing?
It's still a one-liner once you've configured your async task handler. Which makes the example custom email sending microservice even more ridiculous when it can be done trivially by configuring proven off-the-shelf components and third party email delivery services.
I wasn’t sure how ready rq was for prime time, but I’ve hit far too many celery bugs and the maintenance hasn’t been great for awhile.
Django-RQ's job decorator is basically a drop-in replacement for Celery's task decorator. Django-RQ's built-in Django admin app is very nice.
My Celery usage was pretty simple (mostly background email sending and PDF generation) but for those use-cases Django-RQ has been a very good replacement. Your mileage may vary of course.