Creating SMTP provider (#29968)

.github/ISSUE_TEMPLATE/airflow_providers_bug_report.yml

@@ -91,6 +91,7 @@ body:
         - sftp
         - singularity
         - slack
+        - smtp
         - snowflake
         - sqlite
         - ssh

CONTRIBUTING.rst

@@ -621,7 +621,7 @@ imap, influxdb, jdbc, jenkins, kerberos, kubernetes, ldap, leveldb, microsoft.az
 microsoft.mssql, microsoft.psrp, microsoft.winrm, mongo, mssql, mysql, neo4j, odbc, openfaas,
 opsgenie, oracle, pagerduty, pandas, papermill, password, pinot, plexus, postgres, presto, qds,
 qubole, rabbitmq, redis, s3, salesforce, samba, segment, sendgrid, sentry, sftp, singularity, slack,
-snowflake, spark, sqlite, ssh, statsd, tableau, tabular, telegram, trino, vertica, virtualenv,
+smtp, snowflake, spark, sqlite, ssh, statsd, tableau, tabular, telegram, trino, vertica, virtualenv,
 webhdfs, winrm, yandex, zendesk
   .. END EXTRAS HERE
 

INSTALL

@@ -105,7 +105,7 @@ imap, influxdb, jdbc, jenkins, kerberos, kubernetes, ldap, leveldb, microsoft.az
 microsoft.mssql, microsoft.psrp, microsoft.winrm, mongo, mssql, mysql, neo4j, odbc, openfaas,
 opsgenie, oracle, pagerduty, pandas, papermill, password, pinot, plexus, postgres, presto, qds,
 qubole, rabbitmq, redis, s3, salesforce, samba, segment, sendgrid, sentry, sftp, singularity, slack,
-snowflake, spark, sqlite, ssh, statsd, tableau, tabular, telegram, trino, vertica, virtualenv,
+smtp, snowflake, spark, sqlite, ssh, statsd, tableau, tabular, telegram, trino, vertica, virtualenv,
 webhdfs, winrm, yandex, zendesk
 # END EXTRAS HERE
 

airflow/providers/smtp/CHANGELOG.rst

@@ -0,0 +1,30 @@
+ .. Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+ ..   http://www.apache.org/licenses/LICENSE-2.0
+
+ .. Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+
+.. NOTE TO CONTRIBUTORS:
+   Please, only add notes to the Changelog just below the "Changelog" header when there are some breaking changes
+   and you want to add an explanation to the users on how they are supposed to deal with them.
+   The changelog is updated and maintained semi-automatically by release manager.
+
+Changelog
+---------
+
+1.0.0
+.....
+
+Initial version of the provider.

airflow/providers/smtp/__init__.py

@@ -0,0 +1,17 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.

airflow/providers/smtp/hooks/__init__.py

@@ -0,0 +1,17 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.