I use this code below

<!-- Message Body Input -->
<div class="row mb-1">
   <div class="col-lg-12">
      <textarea name="rawMessageText" type="text" rows="12" cols="40" 
      class="form-control"></textarea>
    </div>
</div> <!-- / message input -->

And when we send mail with the textarea input text like "elle va arrivée" it's showing on mail like "elle va arrivée" this type text not arrived perfectly and this problem only with webmail.