I am building a website using python Flask. Everything is going good and now I am trying to implement celery. That was going good as well until I tried to send an email using flask-mail from celery. Now I am getting an "working outside of application context" error. full traceback is Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/celery/task/trace.py", line 228, in trace_task R = retval = fun(*args, **kwargs) File "/usr/lib/python2.7/site-packages/celery/task/trace.py", line 415, in __protected_call__ return self.run(*args, **kwargs) File "/home/ryan/www/CG-Website/src/util/mail.py", line 28, in send_forgot_email msg = Message("Recover your Crusade Gaming Account") File "/usr/lib/python2.7/site-packages/flask_mail.py", line 178, in __init__ sender = current_app.config.get("DEFAULT_MAIL_SENDER") File "/usr/lib/python2.7/site-packages/werkzeug/local.py", line 336, in __getattr__ return getattr(self._get_current_object(), name) File "/usr/lib/python2.7/site-packages/werkzeug/local.py", line 295, in _get_current_object return self.__local() File "/usr/lib/python2.7/site-packages/flask/globals.py", line 26, in _find_app raise RuntimeError('working outside of application context') RuntimeError: working outside of application context This is my mail function: @celery.task def send_forgot_email(email, ref): global mail msg = Message("Recover your Crusade Gaming Account") msg.recipients = msg.sender = "Crusade Gaming stuff@cg.com" msg.html = \ """ Hello Person,<br/> You have requested your password be reset. <a href="{0}" >Click here recover your account</a> or copy and paste this link in to your browser: {0} <br /> If you did not request that your password be reset, please ignore this. """.format(url_for('account.forgot', ref=ref, _external=True)) mail.send(msg) This is my celery file: from __future__ import absolute_import from celery import Celery celery = Celery('src.tasks', broker='amqp://', include=['src.util.mail']) if __name__ == "__main__": celery.start() [url="https://stackoverflow.com/questions/16221295/python-flask-with-celery-out-of-application-context"]Continue reading...[/url]