Slow mailing with Laravel?

Question

I’m doing some mass mail testing but I’m finding it a bit slow the process being done with Laravel. The reason I was finding sending it slow is that I worked in a company where on average 50~60,000 emails were sent around 10 to 12 hours. To test the procedure I’m using only 10 and in a first test it took 45 seconds to finish the process.

STRUCTURE OF THE PROJECT

Laravel 5.4.*

Postgresql database to store the name and emails of pseudo subscribers, basically I use 1 only table with 5 fields (ID, NAME, EMAIL, CREATED_AT, UPDATED_AT).

Sending the emails are being done with the Laravel queue system using the redis. I took the initiative to use the PHPREDIS extension contrary to the standard that already comes with the Laravel that is the Predis, I did this because the performance is superior.

FLOW

Link on the home page calling a route

<div class="links">
    <a href="{{Route('enviarNews')}}">Enviar News</a>
</div>

The route calls this controller, which in turn calls a Job as you can see

<?php

namespace App\Http\Controllers;

use App\Jobs\MailJob;

class MailController extends Controller{

    public function enviarNews(){
        dispatch(new MailJob());

        return 'Sua newsletter está em processo de preparo e sera enviada em breve.';
    }

}

To Job, I’m calling the mail class.

<?php    
namespace App\Jobs;    
use Illuminate\Bus\Queueable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;    
use Illuminate\Support\Facades\Mail;
use App\MailModel;
use App\Mail\MailSend;   

class MailJob implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    /**
     * Create a new job instance.         
     * @return void
     */
    public function __construct()
    {
    }    
    /**
     * Execute the job.         
     * @return void
     */
    public function handle()
    {
        $mails = MailModel::all();            
        foreach ($mails as $mail){
            Mail::to($mail->email)->send(new MailSend($mail));
        }
    }
}

Mailsend and View class

<?php    
namespace App\Mail;    
use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Contracts\Queue\ShouldQueue;
use App\MailModel;

class MailSend extends Mailable
{
    use Queueable, SerializesModels;    
    /**
     * Create a new message instance.
     * @return void
     */        
    public $mail;        
    public function __construct(MailModel $mail)
    {
        $this->mail = $mail;
    }    
    /**
     * Build the message.
     *
     * @return $this
     */
    public function build()
    {
        return $this->from("[email protected]", "Firemail Testes")
        ->subject("Testes de Envio em Massa")
        ->view('mail.news1');
    }
}

View

<p>Ola {{$mail->name}}, estamos testando o envio de emails em massa!</p>

That’s what’s being done, anything in my code might be slowing down sending? By the accounts I did, with this current metric could only send about 19200 emails per day, well below the one I mentioned above and taking advantage, this slowness can be caused by my SMTP server? for these tests I am using the SMTP2GO?

• Can it also be on my internet? (However on average it runs at 30mb).

• What can I do to improve this process and leave as soon as possible?