sample.png
<div class="body">
    <form class="form-group" method="post"
        action="query/verify-subscribers.php?id=0&file=sample.png">
        <div class="row">
            <div class="col-md-6">
                <div class="form-group" style="margin-top: 30px; padding: 10px 0;">
                    <label class="text-dark ">Email<small>*</small></label>
                    <input class="" id="email" name="email" type="text" placeholder="example@domain.com" required=""
                        class="form-control">
                    <button class="btn-danger" name="submit" type="submit"> Subscribe </button>
                    <br>


                </div>
            </div>

        </div>

    </form>
</div>