Код отправки форм для Ghost

Нужен код для отправки форм со страниц Ghost блога https://ghost.org/ и к нему инструкция как интегрировать код в последнюю версию движка.  Формы будут создаваться на страницах блога и в шаблонных страницах движка .hbs

Для тестового шаблона можно использовать форму ниже:

<form data-provide="validation" data-disable="true">

 <div class="form-row">

  <div class="form-group col-md-6">

   <label class="require" for="firstname">First name</label>

   <input type="text" class="form-control" id="firstname" placeholder="First name" required>

  </div>

  <div class="form-group col-md-6">

   <label class="require" for="lastname">Last name</label>

   <input type="text" class="form-control" id="lastname" placeholder="Last name" required>

  </div>

 </div>

 <div class="form-group">

  <label class="require" for="email">Email address</label>

  <input type="email" class="form-control" id="email" placeholder="[email protected]" required>

 </div>

 <div class="form-group">

  <label for="">Social Accounts:</label>

  <div class="input-group">

   <div class="input-group-prepend">

    <span class="input-group-text" id=""><i class="fab fa-facebook"></i></span>

   </div>

   <input type="url" class="form-control col-lg-12" id="" placeholder="Facebook URL">

  </div>

 </div>

 <div class="form-group">

  <div class="input-group">

   <div class="input-group-prepend">

    <span class="input-group-text" id=""><i class="fab fa-twitter"></i></span>

   </div>

   <input type="url" class="form-control" id="" placeholder="Twitter URL" aria-describedby="">

  </div>

 </div>

 <div class="form-group">

  <label class="require">Years</label>

  <select class="form-control" required>

   <option disabled value="" selected hidden>Choose</option>

   <option>None</option>

   <option>1-3</option>

   <option>4-10</option>

   <option>More than 10</option>

  </select>

 </div>

 <div class="form-group">

  <label class="require" for="">Text Area</label>

  <textarea class="form-control" id="" rows="3" placeholder="" minlength="50" required></textarea>

 </div>

 <div class="form-group">

  <label class="require" for="">Text Area</label>

  <textarea class="form-control" id="" rows="10" placeholder="" minlength="500" required></textarea>

 </div>

 <div class="form-group">

  <label class="" for="">File to download?</label>

  <div class="custom-file">

   <input type="file" class="custom-file-input" name="custom-file-input" id="customFile" accept=".doc,.docx,.pdf,.txt" files multiple>

   <label class="custom-file-label" for="customFile" data-toggle="tooltip">Choose file</label>

  </div>

 </div>

 <div class="form-group">

  <label>Url browse online</label>

  <input type="url" class="form-control" id="" placeholder="Link">

 </div>

 <button class="btn btn-secondary" type="submit">Submit form</button>

</form>