Contact form is not working

hi…! I made contact form with kirby guide… but i can not get any mail from this…
do you know why…?

<div class="contact-form">
                    <form method="post" action="<?= $page->url() ?>">
                        <div class="contact-form-child">
                            <div class="honeypot">
                                <label for="company"><?= t('company_name') ?></label>
                                <input
                                    type="text"
                                    id="contactCompany"
                                    name="company"
                                    tabindex="-1"
                                    value=""
                                    placeholder="Corporate name">
                            </div>
                            <div class="field">
                                <label for="name"><?= t('your_name') ?></label>
                                <input
                                    type="text"
                                    value="<?= esc($data['name'] ?? '', 'attr') ?>"
                                    placeholder="Your name"
                                    id="contactName"
                                    name="name"
                                    required="required">
                            </div>
                        </div>
                        <div class="contact-form-child">
                            <div class="honeypot">
                                <label for="title"><?= t('project_title') ?></label>
                                <input
                                    type="text"
                                    value=""
                                    placeholder="Project title"
                                    id="contactTitle"
                                    name="title"
                                    tabindex="-1">
                            </div>
                            <div class="field">
                                <label for="due"><?= t('project_schedule') ?></label>
                                <input
                                    type="text"
                                    value=""
                                    placeholder="yyyy.mm.dd - yyyy.mm.dd"
                                    id="contactDue"
                                    name="due"
                                    required="required">
                            </div>
                        </div>
                        <div class="contact-form-child">
                            <div class="field">
                                <label for="email"><?= t('email') ?></label>
                                <input
                                    type="email"
                                    value=""
                                    placeholder="E-mail"
                                    id="contactEmail"
                                    name="email"
                                    required="required">
                            </div>
                            <div class="field">
                                <label for="number"><?= t('phone_number') ?></label>
                                <input
                                    type="text"
                                    value=""
                                    placeholder="Phone Number"
                                    id="contactNum"
                                    name="number"
                                    required="required">
                            </div>
                        </div>
                        <div class="contact-form-full">
                            <div class="field">
                                <label for="category"><?= t('category') ?></label>
                                <div class="category-input">
                                    <input
                                        type="text"
                                        value=""
                                        placeholder="Select project category"
                                        onfocus="showDropdown()"
                                        id="contactCategory"
                                        name="category"
                                        required="required">
                                    <svg
                                        id="dropdownIcon"
                                        width="23"
                                        height="11"
                                        viewbox="0 0 23 11"
                                        fill="none"
                                        xmlns="http://www.w3.org/2000/svg"
                                        onclick="showDropdown()">
                                        <path d="M1 1L11.5072 9L22.0144 1" stroke="#7D7D7D" stroke-width="2"/>
                                    </svg>
                                    <ul id="categoryDropdown" style="display: none;">
                                        <?php
                        $categories = $page->formcategory()->split(',');
                        ?>

                                        <?php foreach ($categories as $category): ?>
                                        <li
                                            value="<?php echo $category; ?>"
                                            onclick="selectCategory('<?php echo $category; ?>')"><?php echo $category; ?></li>
                                        <?php endforeach; ?>
                                    </ul>
                                </div>
                            </div>
                            <script></script>

                        </div>
                        <div class="contact-form-full" style="padding:1rem 0">
                            <div class="field">
                                <label for="budget"><?= t('budget') ?></label>
                                <div class="category-input">
                                    <input
                                        type="text"
                                        value=""
                                        placeholder="Budget"
                                        onfocus="showDropdown2()"
                                        id="contactBudget"
                                        name="budget"
                                        required="required">
                                    <svg
                                        id="dropdownIcon2"
                                        width="23"
                                        height="11"
                                        viewbox="0 0 23 11"
                                        fill="none"
                                        xmlns="http://www.w3.org/2000/svg"
                                        onclick="showDropdown2()">
                                        <path d="M1 1L11.5072 9L22.0144 1" stroke="#7D7D7D" stroke-width="2"/>
                                    </svg>
                                    <ul id="budgetDropdown" style="display: none;">
                                        <?php
    $budgetTags = $page->budget()->split(',');
    foreach ($budgetTags as $budgetTag):
    ?>
                                        <li
                                            value="<?php echo $budgetTag; ?>"
                                            onclick="selectBudget('<?php echo $budgetTag; ?>')"><?php echo $budgetTag; ?></li>
                                        <?php endforeach; ?>
                                    </ul>
                                </div>
                            </div>
                        </div>
                        <div class="contact-form-full" style="padding-top:0.5rem">
                            <div class="field">
                                <label for="text"><?= t('project_detail') ?></label>
                                <textarea
                                    name="text"
                                    required="required"
                                    id="contactText"
                                    cols="30"
                                    rows="10"
                                    placeholder="Please write the project request details.">
                                    <?php
if (isset($data['text']) && !empty($data['text'])) {
    echo esc($data['text']);
}
?>
                                </textarea>

                                <script>
                                    function clearInputValue(textarea) {
                                        if (textarea.value === "Please write the project request details.") {
                                            textarea.value = "";
                                        }
                                    }
                                </script>
                            </div>
                        </div>
                        <div class="form-bottom">
                            <div id="inputSumit">
                                <input type="submit" name="submit" value="<?= t('send') ?>" class="input-sumit">
                                <h7 class="btnarrow">→<h7></div>

                                    <?php if($success): ?>
                                    <div class="alert success">
                                        <p><?= $success ?></p>
                                    </div>
                                <?php else: ?>
                                    <?php if (isset($alert['error'])): ?>
                                    <div class="alert-error"><?= $alert['error'] ?></div>
                                    <?php endif ?>
                                </div>
                            </form>
                            <?php endif ?>
                        </div>
                    </div>

this is my contact.php… and

<?php
return function($kirby, $pages, $page) {
    $data = null;
    $success = null;

    if($kirby->request()->is('POST') && get('submit')) {
        // Check if any field is empty
        if (
            empty(get('company')) ||
            empty(get('name')) ||
            empty(get('title')) ||
            empty(get('due')) ||
            empty(get('email')) ||
            empty(get('number')) ||
            empty(get('category')) ||
            empty(get('budget')) ||
            empty(get('text'))
        ) {
            // Do nothing or set a custom error message if needed
        } else {
            $data = [
                'company'  => get('company'),
                'name'  => get('name'),
                'title'  => get('title'),
                'due'  => get('due'),
                'email' => get('email'),
                'number' => get('number'),
                'category' => get('category'),
                'budget' => get('budget'),
                'text'  => get('text')
            ];

            $rules = [
                'name'  => ['required', 'minLength' => 3],
                'email' => ['required', 'email'],
                'text'  => ['required', 'minLength' => 3, 'maxLength' => 3000],
            ];

            $messages = [
                'name'  => 'Please enter a valid name',
                'email' => 'Please enter a valid email address',
                'text'  => 'Please enter text between 3 and 3000 characters'
            ];

            if($invalid = invalid($data, $rules, $messages)) {
                // Validation failed, but no alerts are set
            } else {
                try {
                    $kirby->email([
                        'template' => 'email',
                        'from'     => 'info@studio-d-d.com',
                        'replyTo'  => $data['email'],
                        'to'       => 'info@studio-d-d.com',
                        'subject'  => esc($data['name']) . ' sent you a message from your contact form',
                        'data'     => [
                            'text'   => esc($data['text']),
                            'sender' => esc($data['name'])
                        ]
                    ]);
                } catch (Exception $error) {
                    // Handle email sending error if needed
                }

                if (empty($invalid) === true) {
                    $success = 'Thank you!';
                    $data = [];
                }
            }
        }
    }

    return [
        'data'    => $data ?? false,
        'success' => $success ?? false
    ];
};
?>

this is controllers…
I don’t know why i can not get any mail…
please help me or give me some advise…
regards…

Does the form itself work, i.e. you get to the point where the email is supposed to be sent?

How are you sending email, have you set up any transport options?

Please also test if email is sent successfully: Sending emails | Kirby CMS, so it’s then a problem with receiving the email.

For testing forms, I’d recommend a tool like MailHog or MailPit