title: Email subject line starts with “?utf-8?Q?” in codeigniter project
body: <p>Email subject line starts with <code>?utf-8?Q?</code> in codeigniter 3.1</p>
  
  <p>When I send email by email library email deliver properly but subject not showing properly it's look like <code>?utf-8?Q?====? sdfdfd ?utf-8?Q?</code></p>
  
  <p>Also I am using ion_auth for sending email.</p>
  
  <p>If any suggestion please add</p>