如何在发布请求中保存从客户端发送到服务器的数据，并在其他功能中使用该数据？

Question

I have a cron job in the server that send email using sengrid sgMail , My problem is that in order to send that email I need to grab the TO email from the client.

1- I'm sending the email address from the client to the server with a Post Request

- The client POST part is working fine:

2- My problem is how to grab that email address on the server side and pass it to my emailSender function:

I'm able to do it in my email route and I can send a test email

 exports.configure = (app) => {
  // Test route to ensure API succesfully sends email
    app.post('/api/email/', sendEmailTest)


 function sendEmailTest(req, res, done) {
   let toEmail = req.body.email
   emailService.sendEmail(toEmail)
 }
}

3- but in another file I have my cronJob function, and my question is how to grab the email that I get from this POST request and use it in the other file?

The third file is something like this:

const emailService = require('../services/emailService');

exports.register = (agenda) => {
  agendaInstance = agenda;

  // Define what this job will do
  agendaInstance.define(jobName, () => {
  // Retrieve all alarms from our database
    alarmRepo.getAlarms((err, alarms) => {
    // Iterate through all alarms
      alarms.forEach((alarm) => {
      // ...send a mail
      let message = `${alarm.text} the email to send`

      **How can I pass the email to the sendEmail function**

      emailService.sendEmail(message, () => {
        console.log(message);

      });
     });
    });
   });
  };