Unable to Send Email from HTML Form With PHP(gmail) [duplicate] - php

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Debugging PHP Mail() and/or PHPMailer
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PHP mail function doesn't complete sending of e-mail
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Closed 5 years ago.
i'm trying to send that form via gmail :
<!-- form -->
<form name="contactForm" id="contactForm" method="post" action="inc/sendEmail.php">
<fieldset>
<div class="form-field">
<input name="contactName" type="text" id="contactName" placeholder="Nom" value="" minlength="2" required="">
</div>
<div class="form-field">
<input name="contactEmail" type="email" id="contactEmail" placeholder="Email" value="" required="">
</div>
<div class="form-field">
<input name="contactSubject" type="text" id="contactSubject" placeholder="Sujet" value="">
</div>
<div class="form-field">
<textarea name="contactMessage" id="contactMessage" placeholder="message" rows="10" cols="50" required=""></textarea>
</div>
<div class="form-field">
<button class="submitform">Submit</button>
<div id="submit-loader">
<div class="text-loader">Sending...</div>
<div class="s-loader">
<div class="bounce1"></div>
<div class="bounce2"></div>
<div class="bounce3"></div>
</div>
</div>
</div>
</fieldset>
</form> <!-- Form End -->
I've checked with the developer tools and everything is send correctly
My php file is in the inc folder :
<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
require 'src/Exception.php';
require 'src/PHPMailer.php';
require 'src/SMTP.php';
if(isset($_POST["submit"])){
$username = 'myadress#gmail.com';
$password = 'mypass';
$to = $username;
$mail = new PHPMailer();
$mail->IsSMTP();
$mail->SMTPDebug = 1;
$mail->SMTPAuth = true;
$mail->SMTPSecure = 'ssl';
$mail->Host = "smtp.gmail.com";
$mail->Port = 465;
$mail->IsHTML(true);
$mail->Username = $username;
$mail->Password = $password;
$mail->SetFrom($_POST["contactName"." "."contactEmail"]);
$mail->Subject = $_POST["contactSubject"];
$mail->Body = $_POST["contactMessage"];
$mail->AddAddress($to);
if(!$mail->Send())
{
echo "Mailer error : " . $mail->ErrorInfo . "<br>";
}}
Actually i can't see any error but i receive no mail so something is wrong
(indentation here isn't correct but it's good in my code)
Actually i googled for some solutions but no one has worked for it, what am i missing ?