Some contact form emails are send a second time few days later

The CMS Questions
1

Hello,
I have a email contact form based on the kirby template.
But some emails are received a second time, 5/6 days later, with the same content, same title. It doesn’t happen systematically, but with an email from time to time.
I use an external SMTP Relay (Mailjet), I contacted them and they didn’t find any problem in the system, and they suggested it was user error (the user click twice and the second email is delayed).
I was wondering if anyone has ever had this problem and if there was any way of anticipating this type of error?
Here’s is my controller :slight_smile:

if($kirby->request()->is('POST') && get('submit')) {

    if(empty(get('website')) === false) {
        go($page->url());
        exit;
    }

    $data = [
        'name'  => get('name'),
        'email' => get('email'),
        'number' => get('number'),
        'text'  => get('text'),
        'phone' => get('phone')
    ];

    $rules = [
        'name'  => ['required', 'minLength' => 3],
        'email' => ['required', 'email'],
        'number'  => ['required', 'minLength' => 1],
        'phone'  => ['required', 'minLength' => 2],
    ];

    $messages = [
        […]
    ];

    if($invalid = invalid($data, $rules, $messages)) {
        $alert = $invalid;
    } else {
        try {
            $kirby->email([
                'template' => 'email',
                'from'     => 'email',
                'replyTo'  => $data['email'],
                'to' => 'email2',
                'cc' => 'email3',
                'subject'  => "contact - " . esc($data['name']),
                'data'     => [
                    'text'   => esc($data['text']),
                    'sender' => esc($data['name']), 
                    'email' => esc($data['email']),
                    'number' => esc($data['number']),
                    'phone' => esc($data['phone']),
                ],
            ]);
            ]);

        } catch (Exception $error) {
           […]
        }

        if (empty($alert) === true) {
           […]
        }
    }
}

Thank you for your time and have a nice day.

2

Nobody’s had this problem before?