@app.route('/send/email', methods=['POST'])
def send_email():
    to = request.form.get('to')
    if not to:
        return ('Please provide an email address in the "to" query string '
                'parameter.')

    sg = sendgrid.SendGridClient(SENDGRID_API_KEY)

    message = sendgrid.Mail(
        to=to,
        subject='This is a test email',
        html='<p>Example HTML body.</p>',
        text='Example text body.',
        from_email=SENDGRID_SENDER)

    status, response = sg.send(message)

    if status >= 200:
        return 'An error occurred: {}'.format(response)

    return 'Email sent.'
# [END example]
dataset/ETHPy150Open GoogleCloudPlatform/python-docs-samples/managed_vms/sendgrid/main.py/send_email/operator `!=` -> `>=`