$this->load->library('email');

$config = array();
$config['protocol'] = 'smtp';
$config['smtp_host'] = 'smtp.zoho.com';
$config['smtp_user'] = 'support@domain.com';
$config['smtp_pass'] = '**************';
$config['smtp_port'] = 465;
$config["smtp_crypto"] = "ssl";

$this->email->initialize($config);

$this->email->set_newline("rn");
$this->email->from('support@domain.com', 'Support name'); // change it to yours
$this->email->to($to);// change it to yours
$this->email->subject($subject);
$this->email->message($message);

    if($this->email->send())
    {
      echo "Success! - An email has been sent to ".$to;
    }
    else
    {
      show_error($this->email->print_debugger());
      return false;
    }
}

An Error Was Encountered
220 mx.zohomail.com SMTP Server ready June 29, 2018 5:16:40 AM PDT

hello:

The following SMTP error was encountered:
Unable to send email using PHP SMTP. Your server might not be configured to send mail using this method.
Date: Fri, 29 Jun 2018 12:16:40 +0000
From: "Support Name" <support@domain.com>
Return-Path: <support@domain.com>
To: recipent@gmail.com
Subject: =?ISO-8859-1?Q?=43=6F=70=79=20=61=6C=6C=20=74=68=65?=
Reply-To: <support@domain.com>
User-Agent: CodeIgniter
X-Sender: support@domain.com
X-Mailer: CodeIgniter
X-Priority: 3 (Normal)
Message-ID: <5b36232840595@domain.com>
Mime-Version: 1.0


Content-Type: multipart/alternative; boundary="B_ALT_5b3623284061c"

This is a multi-part message in MIME format.
Your email application may not support this format.

--B_ALT_5b3623284061c
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit

Some


--B_ALT_5b3623284061c
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Some Email Description=0A=0A Some Email Description

--B_ALT_5b3623284061c--