diff --git a/ivatar/ivataraccount/forms.py b/ivatar/ivataraccount/forms.py
index 91bb8fe..9b20188 100644
--- a/ivatar/ivataraccount/forms.py
+++ b/ivatar/ivataraccount/forms.py
@@ -49,17 +49,20 @@ class AddEmailForm(forms.Form):
             MAX_NUM_UNCONFIRMED_EMAILS_DEFAULT)
 
         if num_unconfirmed >= max_num_unconfirmed_emails:
+            self.add_error(None, _('Too many unconfirmed mail addresses!'))
             return False
 
         # Check whether or not a confirmation email has been
         # sent by this user already
         if UnconfirmedEmail.objects.filter(
                 user=user, email=self.cleaned_data['email']).exists():
+            self.add_error('email', _('Address already added, currently unconfirmed'))
             return False
 
         # Check whether or not the email is already confirmed by someone
         if ConfirmedEmail.objects.filter(
                 email=self.cleaned_data['email']).exists():
+            self.add_error('email', _('Address already confirmed (by someone else)'))
             return False
 
         unconfirmed = UnconfirmedEmail()
diff --git a/ivatar/ivataraccount/templates/add_email.html b/ivatar/ivataraccount/templates/add_email.html
index 6e91d1c..be12a70 100644
--- a/ivatar/ivataraccount/templates/add_email.html
+++ b/ivatar/ivataraccount/templates/add_email.html
@@ -5,6 +5,14 @@
 
 {% block content %}
 
+{% if form.errors %}
+    {% for error in form.non_field_errors %}
+        <div class="alert alert-danger">
+            <strong>{{ error|escape }}</strong>
+        </div>
+    {% endfor %}
+{% endif %}
+
 <h1>{% trans 'Add a new email address' %}</h1>
 
 <p>{% blocktrans %}Otherwise, type your email address in the box below and we will send you an email with a link to click on in order to verify that you own that email address.{% endblocktrans %}</p>
diff --git a/ivatar/ivataraccount/views.py b/ivatar/ivataraccount/views.py
index 414a644..87c0213 100644
--- a/ivatar/ivataraccount/views.py
+++ b/ivatar/ivataraccount/views.py
@@ -13,6 +13,7 @@ from django.contrib.auth.forms import UserCreationForm, SetPasswordForm
 from django.utils.translation import ugettext_lazy as _
 from django.http import HttpResponseRedirect, HttpResponse
 from django.urls import reverse_lazy, reverse
+from django.shortcuts import render
 
 from openid import oidutil
 from openid.consumer import consumer
@@ -92,7 +93,7 @@ class AddEmailView(SuccessMessageMixin, FormView):
 
     def form_valid(self, form):
         if not form.save(self.request):
-            messages.error(self.request, _('Address not added'))
+            return render(self.request, self.template_name, { 'form': form })
         else:
             messages.success(self.request, _('Address added successfully'))
         return super().form_valid(form)
@@ -369,7 +370,7 @@ class AddOpenIDView(SuccessMessageMixin, FormView):
     def form_valid(self, form):
         openid_id = form.save(self.request.user)
         if not openid_id:
-            messages.error(self.request, _('ID not added'))
+            return render(self.request, self.template_name, { 'form': form })
         else:
             messages.success(self.request, _('ID added successfully'))
             return HttpResponseRedirect(