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Hello I'm trying to create a way to send auto emails on my website. I'm using phpmailermaster for this. to test the mailing out I created a button that when pressed should send an email to the email I have written in there. but I can't seem to get it to work? what am I doing wrong?? it continue to give me "kan geen mail versturen" this means in english "can't send a mail"

I tried to do an error check and I get this error:
Message could not be sent.Mailer Error: SMTP connect() failed. 


// Deze dependencies laden we handmatig in 
//ik laad hier de files van php mailer master in 
    use PHPMailer\PHPMailer\PHPMailer;
    require 'PHPMailer.php';
    require 'SMTP.php';
    require 'Exception.php';
//Deze function stuurt emails via Gmail
function mailen($ontvangerStraat = null, $ontvangerNaam = null, $onderwerp = null, $bericht = null) {

    $mail = new PHPMailer();

    //verbinden met Gmail
    $mail->IsSMTP(); //SMTP = simple mail transfer protocol
    $mail->SMTPAuth = true;
    $mail->SMTPSecure = "ssl"; //zorgt voor versleutelde verbinding tussen 2 computers
    $mail->Host = "";
    $mail->Port = 465;

    //Identificeer jezelf bij gmail'
    $mail->Username = "";
    $mail->Password = "xxxx"; 

    //email opstellen
    //$mail->SetForm("", "Naam"); werkt niet bij deze versie
    $mail->From = '';
    $mail->FromName = 'Naam';
    $mail->Subject = $onderwerp;
    $mail->CharSet = 'UTF-8';
    //heele rare rij code misschien hier naar kijken als het fout gaat
    $bericht = "<body style=\"font-family: Verdana, Verdana, Geneva, sans-serif; font-size: 14px; color: #000;\">". $bericht . "</body></html>";
    $mail->AddAddress($ontvangerStraat, $ontvangerNaam);
    //mail = bericht en moet in de body van het bericht komen te staan
    $mail->Body = $bericht;

    //stuur mail
    //dit werkt niet 
        //mail succesfully sends
        echo "<script>alert('Mail is verstuurd');</script>";
        //mail can't send
        echo "<script>alert('Kon geen mail versturen');</script>";

//UPDATE 8-6-2021: de hele dag mee bezig geweest maar hij blijft me geen mail versturen.
//UPDATE 9-6-2021: maandag en dinsdag de heledag mee bezig geweest en het werkte niet en nu werkt het opeens wel???? 
//Maar hoe weet hij gedachte te verzenden? UPDATE dat doet hij in registreren.php

the mail structure
<?php include "mailen.php";?>
   <!-- sending a mail -->
      //moet misschien nog in prepared statements maar eerst maar voor zorgen dat dit werkt
      //tijd plus 1 uur
         $newtime = date('H:i', time() + 3600);
         //echo $newtime;
         //$sql = "SELECT * FROM orders";
        // $result = $conn -> query($sql);
            // while($row = $result-> fetch_assoc()){
                  $email = "";
                  $klant = "test";
                  $onderwerp = "Bestelling";
                  $bericht = "Geachte $klant, uw bestelling is bevestigd! U kunt uw order ophalen om $newtime";
                  mailen($email, $klant, $onderwerp, $bericht);
            // }


the button that should send this mail however this doesn't work
<link rel="stylesheet" href="" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<button type="button" class="btn btn-primary"><a href="mail/bevestigordermail.php">sent mail</a></button>

What I have tried:

I have a book with a tutorial on how to do php mailer master but I can't get it to work nor do I see what I'm doing wrong. Tried looking it up on the internet but this also gave me no results. it does seem to be a common problem
Updated 7-Dec-21 22:49pm
Richard MacCutchan 8-Dec-21 4:29am    
It is most likely Google blocking you. You need to authorise the web server with Google.
Rebecca2002 8-Dec-21 4:48am    
yes that was indeed the case. had to look on the internet how to do that but it works now.
Richard MacCutchan 8-Dec-21 6:26am    
This happened to me a long time ago and, sorry, but I could not recall how I fixed it.

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