CodeIgniter 4 Send Email with SMTP Tutorial

In CodeIgniter 4, the email library allows users to send emails using SMTP (Simple Mail Transfer Protocol).

Here’s a step-by-step guide on how to send emails in CodeIgniter 4:

Step 1: Edit Email.php

First of all, visit app/config directory and open email.php file in any text editor.

Step 2: Configure Email SERVER

Now, add valid configuration in email.php file, like the following:

public $SMTP = [
    'protocol'  => 'smtp',
    'SMTPHost'  => 'your-smtp-host', // e.g., smtp.example.com
    'SMTPPort'  => 465, // Port number for SMTP (e.g., 465 for SSL)
    'SMTPUser'  => 'your-smtp-username',
    'SMTPPass'  => 'your-smtp-password',
    'SMTPCrypto' => 'ssl', // Encryption method (ssl, tls, or empty)
    'mailType'  => 'html', // Set email format: text or html
    'charset'   => 'UTF-8',
    'validate'  => true,
    'CRLF'      => "\r\n",
    'newline'   => "\r\n",
];

Note that:- If you are sending a mail using Gmail you have to allow non-secure apps to access Gmail you can do this by going to your Gmail settings here.

Once less secure apps are enabled; now you can use your Gmail for sending the emails.

Step 3: Send Email

Open your controller file and use the following code into it to send email using Gmail:

$email = \Config\Services::email();

$email->setTo('[email protected]');
$email->setFrom('[email protected]', 'Tutsmake.com');
$email->setSubject('Test Email');
$email->setMessage('This is a test email from CodeIgniter 4 with SMTP.');

if ($email->send()) {
    echo 'Email sent successfully.';
} else {
    echo 'Error sending email: ' . $email->printDebugger();
}

Using the 3 steps in this tutorial, you can send email from your Codeigniter 4 project with gmail smtp.

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