Node.js SparkPost Not able to send attachments via transmission API

Question

I am using Node.js and Axios to send emails via SparkPost Transmission API. I am able to get the emails successfully, however, I am not able to get the attachments. The Spark Post documentation says that we can get the attachment files using content.attachments, but still I was able to get the mail, but did not receive the expected attachment file.

Attached below is the code snippet:

  static async sendModelReport() {
const data = {
  content: {
    template_id: process.env.emailTemplate,
    attachments: [{
      name: 'report.pdf',
      type: 'application/pdf',
      data: 'Q29uZ3JhdHVsYXRpb25zLCB5b3UgY2FuIGJhc2U2NCBkZWNvZGUh',
    }], // taken from example and tried others too.
  },
  recipients: [{
    address: process.env.internalEmail,
    substitution_data: {
      environment: process.env.NODE_ENV,
    },
  }],
};
try {
  const response = await axios({
    method: 'post',
    url: `${process.env.emailServiceBaseURL}/api/v1/transmissions`,
    data,
    headers: {
      'Content-Type': 'application/json',
      Authorization: process.env.emailServiceKey,
    },
  });
  if (response.data && response.data.results) {
    return response.data.results;
  }
} catch (error) {
  console.log(error.response.data);
  throw new Error(`Email Service Error: ${error.message}`);
}

}

Answer 1

It turns out spark post doesn't support sending attachements with stored templates. One work around is that we can get the stored template and use that template html to send mail.

async sendModelReport() {
// Update code start
const getTemplateResponse = await retrieveTemplate(templateId);
getTemplateResponse.content.attachments = attachments: [{
      name: 'report.pdf',
      type: 'application/pdf',
      data: 'Q29uZ3JhdHVsYXRpb25zLCB5b3UgY2FuIGJhc2U2NCBkZWNvZGUh',
    }];
const data = {
  content: getTemplateResponse.content,
// Updated code end
  recipients: [{
    address: process.env.internalEmail,
    substitution_data: {
      environment: process.env.NODE_ENV,
    },
  }],
};
try {
  const response = await axios({
    method: 'post',
    url: `${process.env.emailServiceBaseURL}/api/v1/transmissions`,
    data,
    headers: {
      'Content-Type': 'application/json',
      Authorization: process.env.emailServiceKey,
    },
  });
  if (response.data && response.data.results) {
    return response.data.results;
  }
} catch (error) {
  console.log(error.response.data);
  throw new Error(`Email Service Error: ${error.response.data}`);
}

}