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Create Email Delivery Interface

Create email service abstraction supporting two transports: SQS queue or HTTP POST to containerized email service. Validate config on startup and fail fast if invalid.

Note:

  • Config: EMAIL_TRANSPORT (sqs/http), EMAIL_SERVICE_NAMESPACE (portal/aktion)
  • SQS: send to AWS_SQS_EMAIL_QUEUE_URL using AWS SDK
  • HTTP: POST to EMAIL_SERVICE_URL (env var), no authentication (local only), no retry logic
  • Method: sendEmail(to, template, namespace, vars)
  • From address, reply-to, from name configured via env vars (consistent per service)
  • Log failures with full context, throw exceptions for caller

Example(s):

Message format (both transports): 

{
  "to_addresses": ["email@example.com"],
  "template": "template-name",
  "namespace": "namespace-value",
  "template_vars": {
    "key": "value"
  }
}

Note: from_address, reply_to_addresses, from_name configured via email service env vars (not per-message)