It is often difficult to quickly debug 500 errors that occur on your Flask application, especially if you are not the one to cause the error.
The Flask-ErrorMail extension provides a simple tool for configuring your Flask application to automatically send stacktrace emails to a list of administrators whenever an Internal Server Error happens.
Source code and issue tracking at Github.
Flask-ErrorMail requires Flask-Mail which in turn, requires the use of the Lamson library, which unfortunately has dependencies that do not work on Windows.
You can install Flask-ErrorMail, Lamson and other libraries with the no dependencies option:
easy_install -N lamson chardet Flask-ErrorMail
Install with pip and easy_install:
pip install Flask-ErrorMail
or download the latest version from Github:
git clone https://github.com/jasonwyatt/Flask-ErrorMail.git cd Flask-ErrorMail python setup.py install
If you are using virtualenv, it is assumed that you are installing flask-mail in the same virtualenv as your Flask application(s).
Flask-ErrorMail depends on Flask-Mail, which is configured through the standard Flask config API. You can see those configuration options at the Flask-Mail docs.
Configuration of Flask-ErrorMail is done via the mail_on_500 function:
from flask import Flask from flask_errormail import mail_on_500 ADMINISTRATORS = ( # e-mail addresses ) app = Flask(__name__) mail_on_500(app, ADMINISTRATORS)
Note: Flask-ErrorMail will not send emails if your app is in debug mode.