MVC 6 - Best way to turn my input box border red when validation occurs.

I'm using MVC6 on ASP.NET 5 Beta 8.    Trying to use the new tag helpers to submit a single textbox form that captures e-mail with jquery validation.

In my view I've included these scripts in the shared _Layout.cshtml:

<script src="scripts/jquery-1.10.2.min.js"></script>

<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.14.0/jquery.validate.min.js"></script><script src="http://ajax.aspnetcdn.com/ajax/mvc/5.2.3/jquery.validate.unobtrusive.min.js"></script>  

And then my form in the index.cshtml:

<form asp-controller="Home" asp-action="Index" method="post" class="contact-form"  name="contact-form"><input id="e-mail" asp-for="Email" placeholder="Enter your e-mail here" class="field-input" /><button class="submit" type="submit" onclick="$(this).resetValidation()">notify me</button><div asp-validation-summary="ValidationSummary.All"  class="text-validation"></div></form>

In the controller, I have this code:

        // POST: Home/EmailRegister
        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Index(EmailRegistration model)
        {
            try
            {

          
                

                if (ModelState.IsValid)
                {

                    model.CreateEntity = "EmailRegister";
                    RegistrationContext.EmailRegistrations.Add(model);
                    await RegistrationContext.SaveChangesAsync();
                    ModelState.AddModelError(string.Empty, "Saved your e-mail!");

                }

            }

            catch (DbUpdateException)
            {

                ModelState.AddModelError(string.Empty, "Duplicate e-mail submitted!"
            }

            return View(model);
        }

What's the best way to detect any errors either model property errors OR errors added to the modelstate in the controller with AddModelError AND change the e-mail input box on the form border red on the client side?