wp_mail() return false . waiting for response please or suggestions ou recommandations?

Question

public function send_newsletter()
    {
        global $wpdb;

        $recipients = $wpdb->get_results("SELECT email FROM {$wpdb->prefix}zero_newsletter_email");
        $object = get_option('zero_newsletter_object', 'Newsletter');
        $content = get_option('zero_newsletter_content', 'Mon contenu');
        $sender = get_option('zero_newsletter_sender', '[email protected]'); 
        // Enverra la valeur de l'option et s'il n'a pas trouvé qu'il envoie le second paramètre
        $header = array('From: '.$sender);

        $result = wp_mail($recipients[0]->email, $object, $content, $header);
        var_dump($result); // false
    }

Answer 1

Have you verified the hosting environment can send emails? If it is a local test environment, your email may be getting caught up on your own computer. Many of the hosting environments prevent emailing to prevent spam.

I would probably try using the default emailing capabilities of a working plugin first to test this. Or, try a very simple script:

var_dump(wp_mail('[email protected]', 'my test subject', 'here is the message'));
die;

If this isn't working, I'd try to remove the environment/install from being an issue. Try this simple script on a fresh install or new environment. Do it until you see success then replace it with your own. From there, you can use a series of var_dump() commands to see what the variables are holding and you will be able to pinpoint what is going wrong.

Answer 2

First, you don't ask a question. But I assume that you are getting a false return from the mail() command. That can happen for a number of reasons.

I'd check to make sure that your query is actually returning results. If the 'recipient' value is empty, the mail() will fail, for instance.

So, dump your query results. Make sure they work. And change your code to test for valid results. If the results are empty for some reason, or the record doesn't have an email returned, then you need to test for that and not do the mail() command.