I have a Magento ver. 2.1.3 setup that is not sending any emails.

I'm trying to fix this, but nothing I do seems to work.

My server has protections against spam which forces scripts to use SMTP.

I've read that I would need an extension for that, so I've tried MagePal_GmailSmtpApp and Mageplaza_Smtp, none of them worked.

I've followed their instructions correctly and they were installed correctly, I could setup their config in the dashboard, both of them offered a "test" email and they both worked, it's just the regular Magento emails that were not working.

The gmailsmtpapp extension at least gave an error:

Fatal error: Uncaught Error: Call to undefined method Smartwave\Porto\Model\Transport\Interceptor::getMessage() in /home/user/public_html/vendor/magepal/magento2-gmailsmtpapp/Plugin/Mail/TransportPlugin.php:29 

Stack trace:
#0 /home/user/public_html/vendor/magento/framework/Interception/Interceptor.php(142): MagePal\GmailSmtpApp\Plugin\Mail\TransportPlugin->aroundSendMessage(Object(Smartwave\Porto\Model\Transport\Interceptor), Object(Closure))
#1 /home/user/public_html/var/generation/Smartwave/Porto/Model/Transport/Interceptor.php(26): Smartwave\Porto\Model\Transport\Interceptor->___callPlugins('sendMessage', Array, Array)
#2 /home/user/public_html/vendor/magento/module-customer/Model/EmailNotification.php(239): Smartwave\Porto\Model\Transport\Interceptor->sendMessage()
#3 /home/user/public_html/vendor/magento/module-customer/Model/EmailNotification.php(297): Magento\Customer\Model\EmailNotification->sendEmailTemplate(Object(Magento\Customer\Model\Data\Customer), 'customer/passw in /home/user/public_html/vendor/magepal/magento2-gmailsmtpapp/Plugin/Mail/TransportPlugin.php on line 29

I've tracked down the Interceptor class to a file in /var/generation/Smartwave/Porto/Model/Transport

It looks like this:

namespace Smartwave\Porto\Model\Transport;

 * Interceptor class for @see \Smartwave\Porto\Model\Transport
class Interceptor extends \Smartwave\Porto\Model\Transport implements \Magento\Framework\Interception\InterceptorInterface
    use \Magento\Framework\Interception\Interceptor;

    public function __construct(\Magento\Framework\Mail\MessageInterface $message)

     * {@inheritdoc}
    public function sendMessage()
        $pluginInfo = $this->pluginList->getNext($this->subjectType, 'sendMessage');
        if (!$pluginInfo) {
            return parent::sendMessage();
        } else {
            return $this->___callPlugins('sendMessage', func_get_args(), $pluginInfo);

Now I'm trying to go more in depth to debug this, but I can't find any useful information or documentation that is for programmers.

On some answers here I've read that Magento is queuing emails and a cron-job is sending them, where is it queuing them? Could I just make a script that reads this queue and process the emails myself?

Anyone knows where I could find more information on how the email system works in Magento 2.1?

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