<form class="form-wrap" action="{% url 'settings:send_email' %}" method="post" >
                {% csrf_token %}
                <input placeholder="Ваше имя" name="form[user_name]" minlength="3" required>
                <div class="necessaty_fields" style="display:none;"><input type="text" value="1" name="info"/></div>
                <input placeholder="Номер телефона" name="form[phone_adress]" minlength="12" maxlength="18" required>
                <div class="necessaty_fields" style="display:none;"><input type="text" value="text" name="text"/></div>
                <input placeholder="E-mail" name="form[mail_adress]">
                <input type="hidden" name="email">
                <div class="necessaty_fields" style="display:none;"><input type="text" value="test@test.ru" name="email3"/></div>
                <button>Отправить</button>
            </form>