title: Possible to send an email from SendGrid & React.js without a back-end?
body: <p>I have a React.js app that I am hosting on a cPanel that does not allow a back-end within the application.  Wondering if I can get sendgrid to work without the back-end?  Has anyone gotten this to work previously?</p>
  
  <p>I currently get the following error:</p>
  
  <pre><code>Access to fetch at 'https://api.sendgrid.com/v3/mail/send' from origin ' 
      https://angelospizzaharvard.com' has been blocked by CORS policy: 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. 
  
  
  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.
      Navbar.js:427 TypeError: Failed to fetch
  </code></pre>