gistfile1.txt

if not app.debug:  # pragma: no cover
    import logging
    from logging.handlers import SMTPHandler
    mail_handler = SMTPHandler(
        ('smtp.mailgun.org', 25),
        'noreply@example.com',
        ['joe@example.com'],
        'Application Error',
        (USERNAME, PASSWORD)
    )
    mail_handler.setLevel(logging.INFO)
    app.logger.addHandler(mail_handler)