diff --git a/accounts/admin.py b/accounts/admin.py
index b6cb776..5a90ca6 100644
--- a/accounts/admin.py
+++ b/accounts/admin.py
@@ -1,6 +1,6 @@
 from django.contrib import admin
 
-from accounts.models import Profile, Speaker
+from accounts.models import Profile, Participation
 
 admin.site.register(Profile)  # FIXME extend user admin
-admin.site.register(Speaker)
+admin.site.register(Participation)
diff --git a/accounts/migrations/0001_initial.py b/accounts/migrations/0001_initial.py
index 56cb873..e46e974 100644
--- a/accounts/migrations/0001_initial.py
+++ b/accounts/migrations/0001_initial.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
-# Generated by Django 1.9.7 on 2016-06-12 21:41
+# Generated by Django 1.9.7 on 2016-06-13 18:50
 from __future__ import unicode_literals
 
+import accounts.models
 from django.conf import settings
 import django.contrib.sites.managers
 from django.db import migrations, models
@@ -14,21 +15,13 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
-        ('sites', '0002_alter_domain_unique'),
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('sites', '0002_alter_domain_unique'),
     ]
 
     operations = [
         migrations.CreateModel(
-            name='Profile',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('biography', models.TextField(blank=True, verbose_name='Biography')),
-                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
-            ],
-        ),
-        migrations.CreateModel(
-            name='Speaker',
+            name='Participation',
             fields=[
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                 ('arrival', models.DateTimeField(blank=True, null=True)),
@@ -44,8 +37,17 @@ class Migration(migrations.Migration):
                 ('on_site', django.contrib.sites.managers.CurrentSiteManager()),
             ],
         ),
+        migrations.CreateModel(
+            name='Profile',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('biography', models.TextField(blank=True, verbose_name='Biography')),
+                ('email_token', models.CharField(default=accounts.models.generate_user_uid, max_length=12)),
+                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
         migrations.AlterUniqueTogether(
-            name='speaker',
+            name='participation',
             unique_together=set([('site', 'user')]),
         ),
     ]
diff --git a/accounts/models.py b/accounts/models.py
index db4ad50..0cafe85 100644
--- a/accounts/models.py
+++ b/accounts/models.py
@@ -5,18 +5,23 @@ from django.contrib.sites.managers import CurrentSiteManager
 from django.contrib.sites.models import Site
 from django.core.urlresolvers import reverse
 from django.db import models
+from django.utils.crypto import get_random_string
 
-__all__ = ['Profile', 'Speaker']
+__all__ = ['Profile', 'Participation']
 
 
 def enum_to_choices(enum):
     return ((item.value, item.name) for item in list(enum))
 
+def generate_user_uid():
+    return get_random_string(length=12, allowed_chars='abcdefghijklmnopqrstuvwxyz0123456789')
+
 
 class Profile(models.Model):
 
     user = models.OneToOneField(User)
     biography = models.TextField(blank=True, verbose_name='Biography')
+    email_token = models.CharField(max_length=12, default=generate_user_uid)
 
     def __str__(self):
         return self.user.get_full_name() or self.user.username
@@ -25,16 +30,17 @@ class Profile(models.Model):
         return reverse('profile')
 
 
-class Speaker(models.Model):
+class Participation(models.Model):
 
     TRANSPORTS = IntEnum('Transport', 'train plane')
     CONNECTORS = IntEnum('Connector', 'VGA HDMI miniDP')
 
     site = models.ForeignKey(Site, on_delete=models.CASCADE)
-
     user = models.ForeignKey(User)
+
     arrival = models.DateTimeField(blank=True, null=True)
     departure = models.DateTimeField(blank=True, null=True)
+    # TODO: These should multi-choice fields
     transport = models.IntegerField(choices=enum_to_choices(TRANSPORTS), blank=True, null=True)
     connector = models.IntegerField(choices=enum_to_choices(CONNECTORS), blank=True, null=True)
     constraints = models.TextField(blank=True)
@@ -43,13 +49,14 @@ class Speaker(models.Model):
     on_site = CurrentSiteManager()
 
     class Meta:
+        # A User can participe only once to a Conference (= Site)
         unique_together = ('site', 'user')
 
     def __str__(self):
-        return str(self.user.profile)
+        return "%s participation to %s" % (str(self.user.profile), self.site.name)
 
     def get_absolute_url(self):
-        return reverse('show-speaker', kwargs={'username': self.user.username})
+        return reverse('show-participation', kwargs={'username': self.user.username})
 
 
 def create_profile(sender, instance, created, **kwargs):
diff --git a/accounts/signals.py b/accounts/signals.py
index 5001fd2..34bc1e8 100644
--- a/accounts/signals.py
+++ b/accounts/signals.py
@@ -1,10 +1,14 @@
-from django.contrib import messages
 from django.contrib.auth.signals import user_logged_in, user_logged_out
 from django.dispatch import receiver
+from django.contrib import messages
+from django.contrib.sites.shortcuts import get_current_site
+
+from .models import Participation
 
 
 @receiver(user_logged_in)
 def on_user_logged_in(sender, request, **kwargs):
+    Participation.on_site.get_or_create(user=request.user, site=get_current_site(request))
     messages.success(request, 'Welcome!', fail_silently=True)  # FIXME
 
 
diff --git a/accounts/tests.py b/accounts/tests.py
index 7ef22ac..7e63be5 100644
--- a/accounts/tests.py
+++ b/accounts/tests.py
@@ -3,7 +3,7 @@ from django.contrib.sites.models import Site
 from django.core.urlresolvers import reverse
 from django.test import TestCase
 
-from .models import Profile, Speaker
+from .models import Profile, Participation
 
 ROOT_URL = 'accounts'
 
@@ -12,12 +12,12 @@ class AccountTests(TestCase):
     def setUp(self):
         for guy in 'ab':
             User.objects.create_user(guy, email='%s@example.org' % guy, password=guy)
-        Speaker.objects.create(user=User.objects.first(), site=Site.objects.first())
+        Participation.objects.create(user=User.objects.first(), site=Site.objects.first())
 
     def test_models(self):
         self.assertEqual(Profile.objects.count(), 2)
         self.client.login(username='b', password='b')
-        for model in [Profile, Speaker]:
+        for model in [Profile, Participation]:
             item = model.objects.first()
             self.assertEqual(self.client.get(item.get_absolute_url()).status_code, 200)
             self.assertTrue(str(item))
diff --git a/conversations/admin.py b/conversations/admin.py
index 46913f3..d12718a 100644
--- a/conversations/admin.py
+++ b/conversations/admin.py
@@ -2,5 +2,6 @@ from django.contrib import admin
 
 from .models import Conversation, Message
 
+
 admin.site.register(Conversation)
 admin.site.register(Message)
diff --git a/conversations/apps.py b/conversations/apps.py
index 7fc0e2b..73892cf 100644
--- a/conversations/apps.py
+++ b/conversations/apps.py
@@ -5,4 +5,4 @@ class ConversationsConfig(AppConfig):
     name = 'conversations'
 
     def ready(self):
-        import conversations.signals  # noqa
+        import conversations.signals
diff --git a/conversations/emails.py b/conversations/emails.py
new file mode 100644
index 0000000..e76052c
--- /dev/null
+++ b/conversations/emails.py
@@ -0,0 +1,83 @@
+from django.shortcuts import get_object_or_404
+from django.core.exceptions import PermissionDenied
+from django.views.decorators.http import require_http_methods
+from django.conf import settings
+from django.http import HttpResponse
+from django.views.decorators.csrf import csrf_exempt
+from django.http import Http404
+from django.contrib.auth.models import User
+from django.core.mail import mail_admins
+
+from .utils import hexdigest_sha256
+from .models import Message
+
+import email
+import re
+from sys import version_info as python_version
+
+
+@csrf_exempt
+@require_http_methods(["POST"])
+def email_recv(request):
+
+    if not hasattr(settings, 'REPLY_EMAIL') \
+            or not hasattr(settings, 'REPLY_KEY'):
+        return HttpResponse(status=501) # Not Implemented
+
+    key = request.POST.get('key')
+    if key != settings.REPLY_KEY:
+        raise PermissionDenied
+
+    if 'email' not in request.FILES:
+        raise HttpResponse(status=400) # Bad Request
+
+    msg = request.FILES['email']
+    if python_version < (3,):
+        msg = email.message_from_file(msg)
+    else:
+        msg = email.message_from_bytes(msg.read())
+
+    mfrom = msg.get('From')
+    mto = msg.get('To')
+    subject = msg.get('Subject')
+
+    if msg.is_multipart():
+        msgs = msg.get_payload()
+        for m in msgs:
+            if m.get_content_type == 'text/plain':
+                content = m.get_payload(decode=True)
+                break
+        else:
+            content = msgs[0].get_payload(decode=True)
+    else:
+        content = msg.get_payload(decode=True)
+
+    if python_version < (3,):
+        content = content.decode('utf-8')
+
+    addr = settings.REPLY_EMAIL
+    pos = addr.find('@')
+    name = addr[:pos]
+    domain = addr[pos+1:]
+
+    regexp = '^%s\+(?P<dest>[a-z0-9]{12})(?P<token>[a-z0-9]{60})(?P<key>[a-z0-9]{12})@%s$' % (name, domain)
+    p = re.compile(regexp)
+    m = None
+    for _mto in map(lambda x: x.strip(), mto.split(',')):
+        m = p.match(_mto)
+        if m:
+            break
+    if not m: # no one matches
+        raise Http404
+
+    author = get_object_or_404(User, profile__email_token=m.group('dest'))
+    message = get_object_or_404(Message, token=m.group('token'))
+    key = hexdigest_sha256(settings.SECRET_KEY, message.token, author.pk)[0:12]
+    if key != m.group('key'):
+        raise PermissionDenied
+
+    answer = Message(conversation=message.conversation,
+                     author=author, content=content)
+    answer.save()
+
+    return HttpResponse()
diff --git a/conversations/forms.py b/conversations/forms.py
new file mode 100644
index 0000000..92c6b8e
--- /dev/null
+++ b/conversations/forms.py
@@ -0,0 +1,10 @@
+from django.forms.models import modelform_factory
+
+from .models import Message
+
+
+MessageForm = modelform_factory(Message,
+        fields=['content'])
+
+
+
diff --git a/conversations/migrations/0001_initial.py b/conversations/migrations/0001_initial.py
index 7dff8b4..39b2c35 100644
--- a/conversations/migrations/0001_initial.py
+++ b/conversations/migrations/0001_initial.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
-# Generated by Django 1.9.7 on 2016-06-12 21:41
+# Generated by Django 1.9.7 on 2016-06-13 18:50
 from __future__ import unicode_literals
 
+import conversations.utils
 from django.conf import settings
 from django.db import migrations, models
 import django.db.models.deletion
@@ -21,7 +22,7 @@ class Migration(migrations.Migration):
             name='Conversation',
             fields=[
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('speaker', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='conversation', to='accounts.Speaker')),
+                ('participation', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='conversation', to='accounts.Participation')),
                 ('subscribers', models.ManyToManyField(related_name='_conversation_subscribers_+', to=settings.AUTH_USER_MODEL)),
             ],
         ),
@@ -29,7 +30,7 @@ class Migration(migrations.Migration):
             name='Message',
             fields=[
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('token', models.CharField(max_length=64)),
+                ('token', models.CharField(default=conversations.utils.generate_message_token, max_length=64)),
                 ('date', models.DateTimeField(auto_now_add=True)),
                 ('content', models.TextField()),
                 ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
diff --git a/conversations/models.py b/conversations/models.py
index c0ea7e9..082ab5e 100644
--- a/conversations/models.py
+++ b/conversations/models.py
@@ -1,27 +1,25 @@
-from django.contrib.auth.models import User
-from django.core.urlresolvers import reverse
 from django.db import models
+from django.contrib.auth.models import User
 
-from accounts.models import Speaker
+from accounts.models import Participation
+from .utils import generate_message_token
 
 
 class Conversation(models.Model):
 
-    speaker = models.ForeignKey(Speaker, related_name='conversation')
+    participation = models.OneToOneField(Participation, related_name='conversation')
     subscribers = models.ManyToManyField(User, related_name='+')
 
     def __str__(self):
-        return "Conversation with %s" % self.speaker
-
-    def get_absolute_url(self):
-        return reverse('show-conversation', kwargs={'conversation': self.pk})
+        return "Conversation with %s" % self.participation.user
 
 
 class Message(models.Model):
 
-    token = models.CharField(max_length=64)
     conversation = models.ForeignKey(Conversation, related_name='messages')
 
+    token = models.CharField(max_length=64, default=generate_message_token)
+
     author = models.ForeignKey(User)
     date = models.DateTimeField(auto_now_add=True)
     content = models.TextField()
diff --git a/conversations/sieve-filter b/conversations/sieve-filter
new file mode 100755
index 0000000..cf5ff04
--- /dev/null
+++ b/conversations/sieve-filter
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+
+import sys
+import requests
+
+
+if len(sys.argv) != 2:
+    print("Usage: %s KEY@URL" % sys.argv[0])
+    sys.exit(1)
+
+key, url = sys.argv[1].split('@')
+
+email = sys.stdin.buffer.raw.read()
+sys.stdout.buffer.write(email) # DO NOT REMOVE
+
+requests.post(
+    url,
+    data={
+        'key': key,
+    },
+    files={
+        'email': ('email.txt', email),
+    }
+)
diff --git a/conversations/signals.py b/conversations/signals.py
index 6522fb0..20fbafa 100644
--- a/conversations/signals.py
+++ b/conversations/signals.py
@@ -1,13 +1,23 @@
-from django.conf import settings
-from django.core import mail
-from django.core.mail import EmailMultiAlternatives
-from django.core.urlresolvers import reverse
 from django.db.models.signals import post_save
 from django.dispatch import receiver
+from django.conf import settings
+from django.core.urlresolvers import reverse
 from django.template.loader import render_to_string
+from django.core import mail
+from django.core.mail import EmailMultiAlternatives
 
-from .models import Message
+
+from .models import Conversation, Message
 from .utils import get_reply_addr
+from proposals.models import Talk, Topic
+from accounts.models import Participation
+
+
+@receiver(post_save, sender=Participation, dispatch_uid="Create Conversation")
+def create_conversation(sender, instance, created, **kwargs):
+    if not created:
+        return
+    conversation = Conversation(participation=instance).save()
 
 
 @receiver(post_save, sender=Message, dispatch_uid="Notify new message")
@@ -17,15 +27,16 @@ def notify_new_message(sender, instance, created, **kwargs):
         return
     message = instance
     conversation = message.conversation
-    site = conversation.speaker.site
+    site = conversation.participation.site
     subject = site.name
-    sender = instance.author
+    sender = message.author
+    if sender != conversation.participation.user \
+            and sender not in conversation.subscribers:
+        conversation.subscribers.add(sender)
     dests = list(conversation.subscribers.all())
-    if conversation.speaker.user not in dests:
-        dests += [conversation.speaker.user]
     data = {
         'content': message.content,
-        'uri': site.domain + reverse('show-conversation', args=[conversation.id]),
+        'uri': site.domain + reverse('messaging'),
     }
     message_id = message.token
     ref = None
@@ -36,7 +47,7 @@ def notify_new_message(sender, instance, created, **kwargs):
 
 def notify_by_email(data, template, subject, sender, dests, message_id, ref=None):
 
-    if hasattr(settings, 'REPLY_EMAIL'):
+    if hasattr(settings, 'REPLY_EMAIL') and hasattr(settings, 'REPLY_KEY'):
         data.update({'answering': True})
 
     text_message = render_to_string('conversations/%s.txt' % template, data)
@@ -47,9 +58,9 @@ def notify_by_email(data, template, subject, sender, dests, message_id, ref=None
             email=settings.DEFAULT_FROM_EMAIL)
 
     # Generating headers
-    headers = {
+    headers = { 
         'Message-ID': "<%s.%s>" % (message_id, settings.DEFAULT_FROM_EMAIL),
-    }
+    }   
     if ref:
         # This email reference a previous one
         headers.update({
diff --git a/conversations/templates/conversations/messaging.html b/conversations/templates/conversations/messaging.html
new file mode 100644
index 0000000..17b3e22
--- /dev/null
+++ b/conversations/templates/conversations/messaging.html
@@ -0,0 +1,38 @@
+{% extends 'base.html' %}
+
+{% block messagingtab %} class="active"{% endblock %}
+
+{% block content %}
+
+<div class="page-header">
+    <h1>Messaging</h1>
+    <p>You can use this page to communicate with the staff.</p>
+</div>
+
+{% for message in message_list %}
+<div class="panel panel-default">
+    <div class="panel-heading">
+        {{ message.date }} | from {{ message.author.profile }}
+    </div>
+    <div class="panel-body">
+        {{ message.content }}
+    </div>
+</div>
+{% endfor %}
+
+<div class="panel panel-default">
+    <div class="panel-heading">
+    Send a message
+    </div>
+    <div class="panel-body">
+        <form action="" method="post" role="form">
+            {% csrf_token %}
+            <div class="form-group">
+                <textarea class="form-control" name="content" required></textarea>
+            </div>
+            <button type="submit" class="btn btn-success"><span class="glyphicon glyphicon-envelope"></span> Send</button>
+        </form>
+    </div>
+</div>
+
+{% endblock %}
diff --git a/conversations/templates/conversations/new_message.html b/conversations/templates/conversations/new_message.html
index 7f261f4..40cc17f 100644
--- a/conversations/templates/conversations/new_message.html
+++ b/conversations/templates/conversations/new_message.html
@@ -2,7 +2,7 @@
 
 <hr>
 {% if answering %}
-Reply to this email directly or <a href="{{ uri }}">view it online</a>.
+Reply to this email directly or <a href="https://{{ uri }}">view it online</a>.
 {% else %}
-<a href="{{ uri }}">Reply online</a>.
+<a href="https://{{ uri }}">Reply online</a>.
 {% endif %}
diff --git a/conversations/templates/conversations/new_message.txt b/conversations/templates/conversations/new_message.txt
index 133a36c..060506a 100644
--- a/conversations/templates/conversations/new_message.txt
+++ b/conversations/templates/conversations/new_message.txt
@@ -1,4 +1,4 @@
 {{ content|safe }}
 
 --
-Reply {% if answering %}to this email directly or view it {% endif %}online: {{ uri }}
+Reply {% if answering %}to this email directly or view it {% endif %}online: https://{{ uri }}
diff --git a/conversations/tests.py b/conversations/tests.py
index d76175b..e860168 100644
--- a/conversations/tests.py
+++ b/conversations/tests.py
@@ -2,7 +2,7 @@ from django.contrib.auth.models import User
 from django.contrib.sites.models import Site
 from django.test import TestCase
 
-from accounts.models import Speaker
+from accounts.models import Participation
 
 from .models import Conversation, Message
 from .utils import get_reply_addr
@@ -11,7 +11,7 @@ from .utils import get_reply_addr
 class ConversationTests(TestCase):
     def setUp(self):
         a, b = (User.objects.create_user(guy, email='%s@example.org' % guy, password=guy) for guy in 'ab')
-        speaker = Speaker.objects.create(user=a, site=Site.objects.first())
+        participation = Participation.objects.create(user=a, site=Site.objects.first())
         conversation = Conversation.objects.create(speaker=speaker)
         Message.objects.create(token='pipo', conversation=conversation, author=a, content='allo')
 
diff --git a/conversations/urls.py b/conversations/urls.py
index 89999ba..95bea24 100644
--- a/conversations/urls.py
+++ b/conversations/urls.py
@@ -1,7 +1,9 @@
 from django.conf.urls import url
 
-from conversations import views
+from conversations import views, emails
+
 
 urlpatterns = [
-    url(r'^(?P<conversation>[0-9]+)$', views.conversation_details, name='show-conversation'),
+    url(r'^recv/$', emails.email_recv),
+    url(r'^$', views.messaging, name='messaging'),
 ]
diff --git a/conversations/utils.py b/conversations/utils.py
index 10afbb1..286a576 100644
--- a/conversations/utils.py
+++ b/conversations/utils.py
@@ -1,6 +1,7 @@
-import hashlib
-
 from django.conf import settings
+from django.utils.crypto import get_random_string
+
+import hashlib
 
 
 def hexdigest_sha256(*args):
@@ -21,6 +22,10 @@ def get_reply_addr(message_id, dest):
     pos = addr.find('@')
     name = addr[:pos]
     domain = addr[pos:]
-    key = hexdigest_sha256(settings.SECRET_KEY, message_id, dest.pk)
+    key = hexdigest_sha256(settings.SECRET_KEY, message_id, dest.pk)[0:12]
 
-    return ['%s+%10s%s%10s%s' % (name, dest.pk, message_id, key, domain)]
+    return ['%s+%s%s%s%s' % (name, dest.profile.email_token, message_id, key, domain)]
+
+
+def generate_message_token():
+    return get_random_string(length=60, allowed_chars='abcdefghijklmnopqrstuvwxyz0123456789')
diff --git a/conversations/views.py b/conversations/views.py
index ac35d6f..cace437 100644
--- a/conversations/views.py
+++ b/conversations/views.py
@@ -1,11 +1,33 @@
+from django.shortcuts import render
+from django.shortcuts import get_object_or_404, redirect, render
 from django.contrib.sites.shortcuts import get_current_site
-from django.shortcuts import get_object_or_404, render
-
-from .models import Conversation
+from django.contrib.auth.decorators import login_required
+from django.contrib import messages
 
 
-def conversation_details(request, conversation):
-    conversation = get_object_or_404(Conversation, id=conversation, speaker__site=get_current_site(request))
-    return render(request, 'conversations/message.html', {
-            'conversation': conversation,
+from accounts.models import Participation
+from .models import Message
+from .forms import MessageForm
+
+
+@login_required
+def messaging(request):
+
+    participation = get_object_or_404(Participation, user=request.user, site=get_current_site(request))
+    conversation = participation.conversation
+    message_list = conversation.messages.all()
+
+    form = MessageForm(request.POST or None)
+
+    if request.method == 'POST' and form.is_valid():
+        message = form.save(commit=False)
+        message.conversation = conversation
+        message.author = request.user
+        message.save()
+        messages.success(request, 'Message sent!')
+        return redirect('messaging')
+
+    return render(request, 'conversations/messaging.html', {
+        'message_list': message_list,
+        'form': form,
     })
diff --git a/ponyconf/settings.py b/ponyconf/settings.py
index 17cd7ab..11f8a45 100644
--- a/ponyconf/settings.py
+++ b/ponyconf/settings.py
@@ -31,6 +31,17 @@ ALLOWED_HOSTS = []
 # Application definition
 
 INSTALLED_APPS = [
+    # our apps
+    'accounts',
+    'ponyconf',
+    'proposals',
+    'conversations',
+
+    # external apps
+    'djangobower',
+    'bootstrap3',
+    'registration',
+
     # build-in apps
     'django.contrib.admin',
     'django.contrib.auth',
@@ -39,17 +50,6 @@ INSTALLED_APPS = [
     'django.contrib.messages',
     'django.contrib.staticfiles',
     'django.contrib.sites',
-
-    # external apps
-    'djangobower',
-    'bootstrap3',
-    'registration',
-
-    # our apps
-    'accounts',
-    'ponyconf',
-    'proposals',
-    'conversations',
 ]
 
 MIDDLEWARE_CLASSES = [
@@ -178,4 +178,3 @@ BOOTSTRAP3 = {
 
 AUTHENTICATION_BACKENDS = ['yeouia.backends.YummyEmailOrUsernameInsensitiveAuth']
 LOGOUT_REDIRECT_URL = 'home'
-REPLY_EMAIL = 'pipo@example.org'
diff --git a/ponyconf/templates/base.html b/ponyconf/templates/base.html
index dc9b584..9ac3bce 100644
--- a/ponyconf/templates/base.html
+++ b/ponyconf/templates/base.html
@@ -55,6 +55,7 @@
             {% if request.user.is_staff %}
             <li><a href="{% url 'admin:index' %}"><span class="glyphicon glyphicon-cog"></span>&nbsp;Administration</a></li>
             {% endif %}
+            <li{% block messagingtab %}{% endblock %}><a href="{% url 'messaging' %}" data-toggle="tooltip" data-placement="bottom" title="Messaging"><span class="glyphicon glyphicon-envelope"></span> Messaging</a></li>
             <li{% block profiletab %}{% endblock %}><a href="{% url 'profile' %}" data-toggle="tooltip" data-placement="bottom" title="Profile"><span class="glyphicon glyphicon-user"></span> {{ request.user.username }}</a></li>
             <li><a href="{% url 'logout' %}" data-toggle="tooltip" data-placement="bottom" title="Logout"><span class="glyphicon glyphicon-log-out"></span></a></li>
             {% else %}
diff --git a/proposals/migrations/0001_initial.py b/proposals/migrations/0001_initial.py
index 056070a..e087928 100644
--- a/proposals/migrations/0001_initial.py
+++ b/proposals/migrations/0001_initial.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Generated by Django 1.9.7 on 2016-06-12 21:41
+# Generated by Django 1.9.7 on 2016-06-13 18:50
 from __future__ import unicode_literals
 
 import autoslug.fields
@@ -67,6 +67,6 @@ class Migration(migrations.Migration):
         ),
         migrations.AlterUniqueTogether(
             name='speech',
-            unique_together=set([('order', 'talk'), ('speaker', 'talk')]),
+            unique_together=set([('speaker', 'talk'), ('order', 'talk')]),
         ),
     ]
diff --git a/proposals/tests.py b/proposals/tests.py
index bcc5e12..e0b442b 100644
--- a/proposals/tests.py
+++ b/proposals/tests.py
@@ -2,7 +2,7 @@ from django.contrib.auth.models import User
 from django.core.urlresolvers import reverse
 from django.test import TestCase
 
-from .models import Speech, Talk, Topic
+from .models import Talk, Topic, Speech
 
 
 class ProposalsTests(TestCase):
diff --git a/proposals/views.py b/proposals/views.py
index 025e96a..c3af312 100644
--- a/proposals/views.py
+++ b/proposals/views.py
@@ -7,7 +7,6 @@ from django.core.exceptions import PermissionDenied
 from django.shortcuts import get_object_or_404, redirect, render
 from django.views.generic import DetailView, ListView
 
-from accounts.models import Speaker
 from proposals.forms import TalkForm
 from proposals.models import Speech, Talk, Topic
 
@@ -62,7 +61,6 @@ def talk_edit(request, talk=None):
             talk.site = site
             talk.save()
             form.save_m2m()
-            Speaker.on_site.get_or_create(user=request.user, site=site)
             Speech.objects.create(speaker=request.user, talk=talk)
             messages.success(request, 'Talk proposed successfully!')
         return redirect(talk.get_absolute_url())