Email support for the Slim 4 Framework using Twig and Swift Mailer.

1.0.0 2019-10-03 13:25 UTC

This package is auto-updated.

Last update: 2022-09-29 02:13:44 UTC


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Email support for the Slim 4 Framework using Twig and Swift Mailer.

Mailable classes will massively tidy up your controller methods or routes, and will make sending email a breeze.


Licensed under MIT. Totally free for private or commercial projects.

Derivated from


composer require semhoun/slim-mailer


Attach a new instance of Semhoun\Mailer\Mailer to your applications container so it can be accessed anywhere you need. Mailer takes two arguments; an instance of Slim\Views\Twig and an optional array of SMTP settings.

$containerBuilder = new ContainerBuilder();
	'mailer' => function (ContainerInterface $container) {
            $settings = $container->get('settings');
            $view = $container->get('view');
			$mailer = new \Semhoun\Mailer\Mailer($view, [
                'host'      => '',  // SMTP Host
                'port'      => '',  // SMTP Port
                'username'  => '',  // SMTP Username
                'password'  => '',  // SMTP Password
                'protocol'  => ''   // SSL or TLS
    		// Set the details of the default sender
    		$mailer->setDefaultFrom('', 'Webmaster');
    		return $mailer;

Supported Options

Option Type Description
host string The host to connect to.
port integer The port to connect to.
username string The username to authenticate with.
password string The password to authenticate with.
protocol string The encryption method, either SSL or TLS.

Sending the Email (Basic Example)

$app->get('/email', function (Request $request, Response $response, $args)  use($app) {
	$user = new stdClass;
    $user->name = 'Paul Muaddib';
    $user->email = '';
    $container = $app->getContainer();
    $container->get('mailer')->sendMessage('emails/welcome.html.twig', ['user' => $user], function($message) use($user) {
        $message->setTo($user->email, $user->name);
        $message->setSubject('Welcome to the Team!');
    $response->getBody()->write('Mail sent!');
    return $response;


<h1>Hello {{ }}</h1>
<p>Welcome to the Team!</p>
<p>Love, Admin</p>

Sending with a Mailable

Using mailable classes are a lot more elegant than the basic usage example above. Building up the mail in a mailable class cleans up controllers and routes, making things look a more tidy and less cluttered as well as making things so much more manageable.

Mailable classes are required to extend the base Semhoun\Mailer\Mailable` class;

use Semhoun\Mailer\Mailable;

class WelcomeMailable extends Mailable
    protected $user;
    public function __construct($user)
        $this->user = $user;
    public function build()
        $this->setSubject('Welcome to the Team!');
        $this->setView('emails/welcome.html.twig', [
            'user' => $this->user
        return $this;

Now in your controller or route, you set the recipients address and name, passing just a single argument into the sendMessage method - a new instance of the mailable class;

$app->get('/email', function (Request $request, Response $response, $args)  use($app) {
	$user = new stdClass;
    $user->name = 'Paul Muaddib';
    $user->email = '';
    $container = $app->getContainer();
    $container->get('mailer')->->setTo($user->email, $user->name)->sendMessage(new WelcomeMailable($user));
    $response->getBody()->write('Mail sent!');
    return $response;


Method Description
attachDynamic(string $data, string $filename, string $mime) Attach in memory data.
attachFile(string $path) Path to a file to set as an attachment.
detachFile(string $path) Path to a file to remove as an attachment.
setBcc(string $address, string $name = '') Set the Bcc of the message.
setBody($body) Set the body of the message.
setCc(string $address, string $name = '') Set the Cc of the message
setDate(DateTimeInterface $dateTime) Set the date at which this message was created.
setFrom(string $address, string $name = '') Set the sender of the message.
setReplyTo(string $address, string $name = '') Set the ReplyTo of the message.
setPriority(int $priority) Set the priority of the message.
setSubject(string $subject) Set the subject of the message.
setTo(string $address, string $name = '') Set the recipent of the message.

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