Fix amazon_ses inbound email ESP provider

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Fix schedules invalid dates issue ([#support-escalations/issues/8084](https://github.com/grafana/support-escalations/issues/8084))
 - Fix issue related to updating alert group metrics when deleting an alert group via the public API by @joeyorlando ([#3544](https://github.com/grafana/oncall/pull/3544))
+- Fix issue with `amazon_ses` inbound email ESP provider by @Lutseslav ([#3509](https://github.com/grafana/oncall/pull/3509))
 
 ## v1.3.76 (2023-12-11)
 

engine/apps/email/tests/test_inbound_email.py

@@ -0,0 +1,53 @@
+import json
+import pytest
+from django.urls import reverse
+from rest_framework import status
+from rest_framework.test import APIClient
+
+
+@pytest.mark.django_db
+def test_amazon_ses_provider_load(settings, make_organization_and_user_with_token, make_alert_receive_channel):
+    settings.INBOUND_EMAIL_ESP = "amazon_ses"
+    settings.INBOUND_EMAIL_DOMAIN = "example.com"
+
+    dummy_channel_token = "dummy-channel-token"
+
+    organization, _, token = make_organization_and_user_with_token()
+    _ = make_alert_receive_channel(organization, token=dummy_channel_token)
+
+    recipient = f"{dummy_channel_token}@example.com"
+    mime = f"""From: sender@example.com
+    Subject: Dummy email message
+    To: {recipient}
+    Content-Type: text/plain
+
+    Hello!
+    """
+
+    message = {
+        "notificationType": "Received",
+        "receipt": {"action": {"type": "SNS"}, "recipients": [recipient]},
+        "content": mime,
+    }
+
+    dummy_sns_message_id = "22b80b92-fdea-4c2c-8f9d-bdfb0c7bf324"
+    dummy_sns_payload = {
+        "Type": "Notification",
+        "MessageId": dummy_sns_message_id,
+        "TopicArn": "arn:aws:sns:us-east-1:123456789012:MyTopic",
+        "Subject": "My First Message",
+        "Message": json.dumps(message),
+    }
+
+    client = APIClient()
+
+    response = client.post(
+        reverse("integrations:inbound_email_webhook"),
+        data=json.dumps(dummy_sns_payload),
+        content_type="application/json",
+        HTTP_AUTHORIZATION=token,
+        HTTP_X_AMZ_SNS_MESSAGE_TYPE="Notification",
+        HTTP_X_AMZ_SNS_MESSAGE_ID=dummy_sns_message_id,
+    )
+
+    assert response.status_code == status.HTTP_200_OK

engine/requirements.txt

@@ -45,6 +45,7 @@ opentelemetry-exporter-otlp-proto-grpc==1.15.0
 django-dbconn-retry==0.1.7
 django-ipware==4.0.2
 django-anymail==8.6
+django-amazon-ses==4.0.1
 django-deprecate-fields==0.1.1
 pymdown-extensions==10.0
 requests==2.31.0