airflow.cfg EmailOperator Gmail 활용하였다. 관련 코드 https://github.com/GHGHGHKO/airflow/blob/master/dags/mail_test.py airflow.cfg [smtp] 설정 문서 https://airflow.apache.org/docs/apache-airflow/stable/configurations-ref.html#config-smtp EmailOperator https://airflow.apache.org/docs/apache-airflow/stable/_api/airflow/operators/email/index.html Gmail SMTP 활용 https://support.google.com/mail/answer/7126229?hl=..