<form class="mx-3">

    <div class="form-group">
      <label for="email">Email address</label>
      <input [ngModel]="email" (ngModelChange)="emailHandler($event)"
             name="email" type="email" class="form-control" id="email"
             aria-describedby="email" placeholder="Enter email">
      <small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone else.</small>
    </div>

</form>