Use CreateTemplate with an AWS SDK

    /// <summary>
    /// Create an email template.
    /// </summary>
    /// <param name="name">Name of the template.</param>
    /// <param name="subject">Email subject.</param>
    /// <param name="text">Email body text.</param>
    /// <param name="html">Email HTML body text.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> CreateEmailTemplateAsync(string name, string subject, string text,
        string html)
    {
        var success = false;
        try
        {
            var response = await _amazonSimpleEmailService.CreateTemplateAsync(
                new CreateTemplateRequest
                {
                    Template = new Template
                    {
                        TemplateName = name,
                        SubjectPart = subject,
                        TextPart = text,
                        HtmlPart = html
                    }
                });
            success = response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (Exception ex)
        {
            Console.WriteLine("CreateEmailTemplateAsync failed with exception: " + ex.Message);
        }

        return success;
    }

//! Create an Amazon Simple Email Service (Amazon SES) template.
/*!
  \param templateName: The name of the template.
  \param htmlPart: The HTML body of the email.
  \param subjectPart: The subject line of the email.
  \param textPart: The plain text version of the email.
  \param clientConfiguration: AWS client configuration.
  \return bool: Function succeeded.
 */
bool AwsDoc::SES::createTemplate(const Aws::String &templateName,
                                 const Aws::String &htmlPart,
                                 const Aws::String &subjectPart,
                                 const Aws::String &textPart,
                                 const Aws::Client::ClientConfiguration &clientConfiguration) {
    Aws::SES::SESClient sesClient(clientConfiguration);

    Aws::SES::Model::CreateTemplateRequest createTemplateRequest;
    Aws::SES::Model::Template aTemplate;

    aTemplate.SetTemplateName(templateName);
    aTemplate.SetHtmlPart(htmlPart);
    aTemplate.SetSubjectPart(subjectPart);
    aTemplate.SetTextPart(textPart);

    createTemplateRequest.SetTemplate(aTemplate);

    Aws::SES::Model::CreateTemplateOutcome outcome = sesClient.CreateTemplate(
            createTemplateRequest);

    if (outcome.IsSuccess()) {
        std::cout << "Successfully created template." << templateName << "."
                  << std::endl;
    }
    else {
        std::cerr << "Error creating template. " << outcome.GetError().GetMessage()
                  << std::endl;
    }

    return outcome.IsSuccess();
}

import { CreateTemplateCommand } from "@aws-sdk/client-ses";
import { sesClient } from "./libs/sesClient.js";
import { getUniqueName } from "@aws-doc-sdk-examples/lib/utils/util-string.js";

const TEMPLATE_NAME = getUniqueName("TestTemplateName");

const createCreateTemplateCommand = () => {
  return new CreateTemplateCommand({
    /**
     * The template feature in Amazon SES is based on the Handlebars template system.
     */
    Template: {
      /**
       * The name of an existing template in Amazon SES.
       */
      TemplateName: TEMPLATE_NAME,
      HtmlPart: `
        <h1>Hello, {{contact.firstName}}!</h1>
        <p>
        Did you know Amazon has a mascot named Peccy?
        </p>
      `,
      SubjectPart: "Amazon Tip",
    },
  });
};

const run = async () => {
  const createTemplateCommand = createCreateTemplateCommand();

  try {
    return await sesClient.send(createTemplateCommand);
  } catch (err) {
    console.log("Failed to create template.", err);
    return err;
  }
};

class SesTemplate:
    """Encapsulates Amazon SES template functions."""

    def __init__(self, ses_client):
        """
        :param ses_client: A Boto3 Amazon SES client.
        """
        self.ses_client = ses_client
        self.template = None
        self.template_tags = set()

    def _extract_tags(self, subject, text, html):
        """
        Extracts tags from a template as a set of unique values.

        :param subject: The subject of the email.
        :param text: The text version of the email.
        :param html: The html version of the email.
        """
        self.template_tags = set(re.findall(TEMPLATE_REGEX, subject + text + html))
        logger.info("Extracted template tags: %s", self.template_tags)


    def create_template(self, name, subject, text, html):
        """
        Creates an email template.

        :param name: The name of the template.
        :param subject: The subject of the email.
        :param text: The plain text version of the email.
        :param html: The HTML version of the email.
        """
        try:
            template = {
                "TemplateName": name,
                "SubjectPart": subject,
                "TextPart": text,
                "HtmlPart": html,
            }
            self.ses_client.create_template(Template=template)
            logger.info("Created template %s.", name)
            self.template = template
            self._extract_tags(subject, text, html)
        except ClientError:
            logger.exception("Couldn't create template %s.", name)
            raise