title: Adding "web version link" in email by sendgrid
body: <p>How do I add a link to a web version of my sendgrid emails like "having trouble reading this email, click here"?</p>
  
  <p><strong>[EDIT]</strong>
  I use a php sendgrid library 
  include "sendgrid-php-master/SendGrid_loader.php";</p>
  
  <p>And I use this code and it doesn't work : </p>
  
  <pre><code>$mail = new SendGrid\Mail();
  ....
  $mail-&gt;setHtml('&lt;a href="[weblink]"&gt;View this email in your browser&lt;/a&gt;&lt;br /&gt;'.$sg_html_code);
  ...
  </code></pre>