用codeigniter发送电子邮件|在哪里存储代码

我使用以下代码在codeigniter中发送电子邮件，并想知道放置代码的最佳位置。

它目前存在于我的控制器中，但是太笨重了，我相信有一个更好的地方放它。

我的电子邮件代码的工作方式是，我设置了我想在电子邮件中的变量，然后将它们输入到模板中并发送。

我将有一个以上的电子邮件被发送到我的网站上，所以我应该把代码和如何。(图书馆助手? ?)

                $this->load->library('email');
                $this->email->initialize();
                $this->email->from('noreply@domain.com', 'domainy');
                $email = $this->input->post('email_address');
                $this->email->to($email); 
                $this->email->subject('Great question. We will answer it as soon as we can');
                $emaildata['title'] = 'Company - Ask us a question';
                $emaildata['preheader_teaser'] = 'Your question has been received and we will be answering it shortly. Please keep an eye on your inbox for our response.';
                $emaildata['preheader_links'] = '   <em><b>Do not reply to this email</b></em>';
                $emaildata['header_image'] = 'http://www.domain.com/assets/img/logo.png';
                $emaildata['body_content'] = '
                <h1>Hi '.$this->input->post('first_name').',</h1>
                <h2 style="color:#ccc !important;">Great question!</h2>
                <p>Your question has been submitted to our consultants and received with thanks. We will answer you question as soon as we can.</p>
                <p>Response generally takes within 24 to 48 hours and will be in the form of an email or (if provided) a telephone call.</p>
                <p>We will handle your question in the most efficient way possible and get back to you with an answer as soon as we can.</p>
                <p>Have a super day!</p>
                <h4  style="color:#1a3665 !important;">Your question to us:</h4>
                '.$this->input->post('question').'          
                ';
                $emaildata['footer_social_links'] = 'Follow us on ';
                $emaildata['footer_copyright'] = 'Copyright &copy; domain MMXI, All rights reserved.';
                $emaildata['footer_description'] = '"Impartial, help and assistance, as and when you need it"';
                $emaildata['footer_mailing_address'] = 'enquiries@domain.com';
                $emaildata['footer_utility_links'] = '<a href="http://www.domain.com/">www.domain.com</a>';
                $emaildata['footer_rewards'] = '&nbsp;';
                $emailbody = $this->load->view('email/templates/simple-basic',$emaildata,true);
                $this->email->message($emailbody);  
                $this->email->send();