Use SendBulkEmail with an AWS SDK

class SESv2Wrapper:
    """Encapsulates Amazon SESv2 email sending actions."""

    def __init__(self, sesv2_client: Any) -> None:
        """
        Initializes the SESv2Wrapper with an SESv2 client.

        :param sesv2_client: A Boto3 SESv2 client.
        """
        self.sesv2_client = sesv2_client

    @classmethod
    def from_client(cls) -> "SESv2Wrapper":
        """
        Creates an SESv2Wrapper instance with a default Boto3 SESv2 client.

        :return: A new SESv2Wrapper instance.
        """
        sesv2_client = boto3.client("sesv2")
        return cls(sesv2_client)


    def send_bulk_email(
        self,
        from_address: str,
        template_name: str,
        default_template_data: str,
        bulk_entries: List[Dict[str, Any]],
        attachments: Optional[List[Dict[str, Any]]] = None,
    ) -> List[Dict[str, Any]]:
        """
        Sends a templated email to multiple recipients in a single API call.

        All recipients receive the same attachment(s) defined in the default
        content, while template data can be personalized per recipient.

        :param from_address: The verified sender email address.
        :param template_name: The name of an existing email template.
        :param default_template_data: Default JSON template data string.
        :param bulk_entries: A list of BulkEmailEntry dicts, each containing
            'Destination' and optionally 'ReplacementEmailContent'.
        :param attachments: An optional list of attachment dicts for all
            recipients.
        :return: A list of BulkEmailEntryResult dicts with status and MessageId.
        :raises ClientError: If the message is rejected (MessageRejected).
        """
        try:
            template_content: Dict[str, Any] = {
                "TemplateName": template_name,
                "TemplateData": default_template_data,
            }

            if attachments:
                template_content["Attachments"] = attachments

            response = self.sesv2_client.send_bulk_email(
                FromEmailAddress=from_address,
                DefaultContent={"Template": template_content},
                BulkEmailEntries=bulk_entries,
            )
            results = response.get("BulkEmailEntryResults", [])
            logger.info(
                "Sent bulk email from %s to %d recipients.",
                from_address,
                len(bulk_entries),
            )
            return results
        except ClientError as err:
            if err.response["Error"]["Code"] == "MessageRejected":
                logger.error(
                    "Bulk message was rejected. Check that the template "
                    "exists, attachment file types are supported, and "
                    "total message size is within limits. Details: %s",
                    err.response["Error"]["Message"],
                )
            else:
                logger.error(
                    "Couldn't send bulk email. Here's why: %s: %s",
                    err.response["Error"]["Code"],
                    err.response["Error"]["Message"],
                )
            raise

    TRY.
        " Build the default template content used for all bulk recipients
        DATA(lo_template) = NEW /aws1/cl_se2template(
          iv_templatename = iv_template_name
          iv_templatedata = iv_template_data ).

        DATA(lo_default_content) = NEW /aws1/cl_se2bulkemailcontent(
          io_template = lo_template ).

        DATA(lo_result) = lo_se2->sendbulkemail(
          iv_fromemailaddress = iv_from_address
          io_defaultcontent   = lo_default_content
          it_bulkemailentries = it_bulk_entries ).

        ot_results = lo_result->get_bulkemailentryresults( ).
        MESSAGE |Bulk email sent to { lines( it_bulk_entries ) } recipient(s).| TYPE 'I'.
      CATCH /aws1/cx_se2messagerejected INTO DATA(lo_rejected).
        MESSAGE lo_rejected TYPE 'I' DISPLAY LIKE 'E'.
        RAISE EXCEPTION lo_rejected.
      CATCH /aws1/cx_se2mailfrmdomnotver00 INTO DATA(lo_not_verified).
        MESSAGE lo_not_verified TYPE 'I' DISPLAY LIKE 'E'.
        RAISE EXCEPTION lo_not_verified.
      CATCH /aws1/cx_se2notfoundexception INTO DATA(lo_not_found).
        MESSAGE lo_not_found TYPE 'I' DISPLAY LIKE 'E'.
        RAISE EXCEPTION lo_not_found.
      CATCH /aws1/cx_se2badrequestex INTO DATA(lo_bad_request).
        MESSAGE lo_bad_request TYPE 'I' DISPLAY LIKE 'E'.
        RAISE EXCEPTION lo_bad_request.
    ENDTRY.