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Editorial Team
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Asked: 2026-06-12T02:09:50+00:00

I’m trying to find a way to add additional parameters to an email using

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I’m trying to find a way to add additional parameters to an email using Codeigniters email class (with the mail() send method). There is no documentation or other information I can find. Do you folks know if there is a way within the framework?

PHP native mail():

mail ( string $to , string $subject , string $message [, string $additional_headers 
       [, string $additional_parameters ]] );

Codeigniter:

$this->load->library('email');
$this->email->from('your@example.com', 'Your Name');
$this->email->to('someone@example.com');
$this->email->subject('Email Test');
$this->email->message('Testing the email class.');
$this->email->additional_parameters('something_goes_here'); // this is what I need
$this->email->send();
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1 Answer

  1. Editorial Team

    CodeIgniter’s Email Library is just a wrapper for PHP’s mail().

    If you dig into the core and inspect system/libraries/Email.php, _send_with_mail() is the function that kicks-off PHP’s native mail().

    The current implementation under safe mode uses:

    mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str)

    The current implmentation without safe mode uses:

    mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str, "-f ".$this->clean_email($this->_headers['From'])

    Neither of which allow user-defined content to fill the $additional_parameters variable. You’ll need to extend the CI_Email class to accomplish this:

    In application/libraries/ create a file MY_Email.php with contents:

    <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Email extends CI_Email{
    public $additional_params = "";
    function __construct(){
        parent::__construct();
    }

    function additional_params($ap){
        $this->additional_params = $ap;
    }

    protected function _send_with_mail(){
        if ($this->_safe_mode == TRUE){
            if ( ! mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str, $this->additional_params)) return FALSE;
            else return TRUE;
        }
        else{
                if ( ! mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str, "-f ".$this->clean_email($this->_headers['From']) . " " . $this->additional_params)) return FALSE;
                else return TRUE;
        }
    }    


}

    Now, to use it:

    $this->email->additional_params('something_goes_here');

    When you call $this->email->send(), this function will take over and append the parameters!

    Haven’t tested any of this. But this is the general idea. Hope it helps.

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