Sendgrid-nodejs: Response to preflight request doesn't pass access control check

[BestLuke]

Issue Summary

I am trying to set up sendgrid mail so I can get a successful demo of my site set up where I need to auto email people. Please let me know if I am being silly as I am still learning and haven't been able to find much on this issue

Steps to Reproduce

1. follow https://github.com/sendgrid/sendgrid-nodejs/tree/master/packages/mail quickstart
2. make a button to activate trigger the email sending
3. Get the error Failed to load https://api.sendgrid.com/v3/mail/send: Response to preflight request doesn't pass access control check: The 'Access-Control-Allow-Origin' header has a value 'https://sendgrid.api-docs.io' that is not equal to the supplied origin. Origin 'http://localhost:3001' is therefore not allowed access. Have the server send the header with a valid value, or, if an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

As stated above I may be missing something completely obvious. I expect it to be sending an email to myself for testing purposes

code follows

Email.js

     // import sgMail from '@sendgrid/mail'
    class Email {
     static sender(recipiant){
     // using SendGrid's v3 Node.js Library
     // https://github.com/sendgrid/sendgrid-nodejs
     const sgMail = require('@sendgrid/mail');
     sgMail.setApiKey(process.env.SENDGRID_API_KEY);
     const msg = {
      to: recipiant,
      from: '[email protected]',
      subject: 'Sending with SendGrid is Fun',
      text: 'and easy to do anywhere, even with Node.js',
      html: 'and easy to do anywhere, even with Node.js',
      };
      sgMail.send(msg);
      }
     }
    module.exports = Email

index.js

    import Email from '../sendgrid/email.js'
      handleClick (event) {
           Email.sender('[email protected]'); 
       }
        <button onClick={this.handleClick}>
    send email
    </button>

[thinkingserious]

Hello @BestLuke,

We do not support sending emails from the front end of your application and here is the reasoning.

We suggest you trigger the email from the front end, but call a service on the backend that actually sends the email.

With Best Regards,

Elmer

[WizX20]

Too bad. How about SPA and webassembly applications? How about progressive web apps, electron apps...