diff --git a/REQUIREMENTS.md b/REQUIREMENTS.md
index a5419e1..c65f0fc 100644
--- a/REQUIREMENTS.md
+++ b/REQUIREMENTS.md
@@ -8,10 +8,12 @@ La liste de paquets fourni est pour Archlinux, les paquets peuvent avoir des nom
 python3
 python-flask
 python-flask-login
+python-flask-mail
 python-flask-migrate
 python-flask-script
 python-flask-sqlalchemy
 python-flask-wtf
+python-itsdangerous
 python-ldap
 python-uwsgi
 python-psycopg2
diff --git a/app/__init__.py b/app/__init__.py
index c5580f4..8a53d17 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -2,6 +2,7 @@ from flask import Flask, g
 from flask_sqlalchemy import SQLAlchemy
 from flask_migrate import Migrate
 from flask_login import LoginManager
+from flask_mail import Mail
 from config import Config
 import time
 
@@ -14,6 +15,7 @@ if Config.SECRET_KEY == "a-random-secret-key":
 
 db = SQLAlchemy(app)
 migrate = Migrate(app, db)
+mail = Mail(app)
 
 login = LoginManager(app)
 login.login_view = 'login'
diff --git a/app/models/users.py b/app/models/users.py
index 1b7f4c9..1fc14ad 100644
--- a/app/models/users.py
+++ b/app/models/users.py
@@ -76,6 +76,7 @@ class Member(User):
     norm = db.Column(db.Unicode(V5Config.USER_NAME_MAXLEN), index=True,
         unique=True)
     email = db.Column(db.Unicode(120), index=True, unique=True)
+    email_confirmed = db.Column(db.Boolean)
     password_hash = db.Column(db.String(255))
     xp = db.Column(db.Integer)
     register_date = db.Column(db.Date, default=date.today)
@@ -118,6 +119,7 @@ class Member(User):
         self.name = name
         self.norm = unicode_names.normalize(name)
         self.email = email
+        self.email_confirmed = not V5Config.ENABLE_EMAIL_CONFIRMATION
         if not V5Config.USE_LDAP:
             self.set_password(password)
         # Workflow with LDAP enabled is User → Postgresql → LDAP → set password
diff --git a/app/routes/account/account.py b/app/routes/account/account.py
index 6b085ab..51a4318 100644
--- a/app/routes/account/account.py
+++ b/app/routes/account/account.py
@@ -1,10 +1,12 @@
-from flask import redirect, url_for, request, flash
+from flask import redirect, url_for, request, flash, abort
 from flask_login import login_required, current_user, logout_user
 from app import app, db
 from app.forms.account import UpdateAccountForm, RegistrationForm, DeleteAccountForm
 from app.models.users import Member
 from app.utils.render import render
+from app.utils.send_mail import send_validation_mail
 import app.utils.ldap as ldap
+from itsdangerous import URLSafeTimedSerializer
 from config import V5Config
 
 
@@ -66,13 +68,43 @@ def register():
             ldap.add_member(member)
             ldap.set_password(member, form.password.data)
         flash('Inscription réussie', 'ok')
+
+        # Email validation message
+        send_validation_mail(member.name, member.email)
+
         return redirect(url_for('validation') + "?email=" + form.email.data)
     return render('account/register.html', title='Register', form=form)
 
 
-@app.route('/register/validation/', methods=['GET', 'POST'])
+@app.route('/inscription/validation', methods=['GET'])
 def validation():
-    mail = request.args['email']
+    try:
+        mail = request.args['email']
+    except Exception as e:
+        print("Error: {e}")
+        abort(404)
+
     if current_user.is_authenticated:
         return redirect(url_for('index'))
     return render('account/validation.html', mail=mail)
+
+@app.route('/inscription/validation/<token>', methods=['GET'])
+def activate_account(token):
+    if current_user.is_authenticated:
+        return redirect(url_for('index'))
+
+    try:
+        ts = URLSafeTimedSerializer(app.config["SECRET_KEY"])
+        email = ts.loads(token, salt="email-confirm-key", max_age=86400)
+    except Exception as e:
+        print(f"Error: {e}")
+        abort(404)
+
+    m = Member.query.filter_by(email=email).first_or_404()
+    m.email_confirmed = True
+
+    db.session.add(m)
+    db.session.commit()
+
+    flash("L'email a bien été confirmé", "ok")
+    return redirect(url_for('login'))
diff --git a/app/routes/account/login.py b/app/routes/account/login.py
index 5f952c3..37d1f03 100644
--- a/app/routes/account/login.py
+++ b/app/routes/account/login.py
@@ -6,11 +6,19 @@ from app.forms.login import LoginForm
 from app.models.users import Member
 from app.models.privs import Group
 from app.utils.render import render
+from app.utils.send_mail import send_validation_mail
 from config import V5Config
 
 
 @app.route('/connexion', methods=['GET', 'POST'])
 def login():
+    # If something failed, return abort("Message")
+    def _abort(msg):
+        flash(msg, 'error')
+        if request.referrer:
+            return redirect(request.referrer)
+        return redirect(url_for('index'))
+
     if current_user.is_authenticated:
         return redirect(url_for('index'))
 
@@ -24,17 +32,17 @@ def login():
 
         # Check if member can login
         if member is not None and "No login" in [g.name for g in member.groups]:
-            flash('Cet utilisateur ne peut pas se connecter', 'error')
-            if request.referrer:
-                return redirect(request.referrer)
-            return redirect(url_for('index'))
+            return _abort('Cet utilisateur ne peut pas se connecter')
 
         # Check if password is ok
         if member is None or not member.check_password(form.password.data):
-            flash('Pseudo ou mot de passe invalide', 'error')
-            if request.referrer:
-                return redirect(request.referrer)
-            return redirect(url_for('index'))
+            return _abort('Pseudo ou mot de passe invalide')
+
+        # Check if user is activated
+        if member.email_confirmed == False:
+            # Send another mail
+            send_validation_mail(member.name, member.email)
+            return _abort(f"Email non confirmé. Un mail de confirmation a de nouveau été envoyé à l'adresse {member.email}")
 
         # Login & update time-based trophies
         login_user(member, remember=form.remember_me.data,
diff --git a/app/templates/email/activate.html b/app/templates/email/activate.html
new file mode 100644
index 0000000..7d9ed2c
--- /dev/null
+++ b/app/templates/email/activate.html
@@ -0,0 +1,14 @@
+<html>
+<body>
+    <div>Bonjour {{ name }},</div>
+
+    <div>Bienvenue sur Planète Casio !</div>
+
+    <div>Afin de pouvoir vous connecter et utiliser nos services, merci de confirmer cette adresse email en cliquant <a href="{{ confirm_url }}">ici</a>.</div>
+    <div>Si ça ne fonctionne pas, utilisez ce lien : <a href="{{ confirm_url }}">{{ confirm_url }}</a></div>
+
+    <div>À bientôt sur Planète Casio !</div>
+
+    <div>L'équipe du site.</div>
+</body>
+</html>
diff --git a/app/templates/email/activate.md b/app/templates/email/activate.md
new file mode 100644
index 0000000..0d9345a
--- /dev/null
+++ b/app/templates/email/activate.md
@@ -0,0 +1,9 @@
+Bonjour {{ name }},
+
+Bienvenue sur Planète Casio !
+
+Afin de pouvoir vous connecter et utiliser nos services, merci de confirmer cette adresse email en cliquant sur ce lien : {{ confirm_url }}
+
+À bientôt sur Planète Casio !
+
+L'équipe du site.
diff --git a/app/utils/send_mail.py b/app/utils/send_mail.py
new file mode 100644
index 0000000..7a32c3a
--- /dev/null
+++ b/app/utils/send_mail.py
@@ -0,0 +1,24 @@
+from flask import url_for, render_template
+from flask_mail import Message
+from app import app, mail
+from itsdangerous import URLSafeTimedSerializer
+from config import V5Config
+
+def send_mail(dest, subject, html="", body=""):
+    m = Message(recipients=[dest], subject=subject, html=html, body=body)
+    mail.send(m)
+
+def send_validation_mail(name, email):
+    ts = URLSafeTimedSerializer(app.config["SECRET_KEY"])
+    token = ts.dumps(email, salt='email-confirm-key')
+    confirm_url = f"https://{V5Config.DOMAIN}" \
+        + url_for('activate_account', token=token)
+    subject = "Confirmez votre email pour compléter l'inscription"
+    html = render_template('email/activate.html', confirm_url=confirm_url,
+        name=name)
+    body = render_template('email/activate.md', confirm_url=confirm_url,
+        name=name)
+    if V5Config.SEND_MAILS:
+        send_mail(member.email, subject, html=html, body=body)
+    else:
+        print(f"Email confirmation url: {confirm_url}")
diff --git a/config.py b/config.py
index 69c5deb..f0c0e54 100644
--- a/config.py
+++ b/config.py
@@ -16,9 +16,14 @@ class Config(object):
         + LocalConfig.DB_NAME
     SQLALCHEMY_TRACK_MODIFICATIONS = False
 
+    MAIL_DEFAULT_SENDER = "noreply@v5.planet-casio.com"
+    MAIL_SUPPRESS_SEND = None
+
 
 class DefaultConfig(object):
     """Every value here can be overrided in the local_config.py class"""
+    # Domain
+    DOMAIN = "v5.planet-casio.com"
     # Length allocated to privilege names (slugs)
     PRIVS_MAXLEN = 64
     # Forbidden user names
@@ -57,6 +62,10 @@ class DefaultConfig(object):
     AVATARS_FOLDER = '/avatar/folder/'
     # Enable guest post
     ENABLE_GUEST_POST = True
+    # Disable email confimation
+    ENABLE_EMAIL_CONFIRMATION = True
+    # Send emails
+    SEND_MAILS = True
 
 class V5Config(LocalConfig, DefaultConfig):
     # Values put here cannot be overidden with local_config
diff --git a/migrations/versions/acf72cf31eea_added_email_validated_property_in_model_.py b/migrations/versions/acf72cf31eea_added_email_validated_property_in_model_.py
new file mode 100644
index 0000000..566f3cc
--- /dev/null
+++ b/migrations/versions/acf72cf31eea_added_email_validated_property_in_model_.py
@@ -0,0 +1,28 @@
+"""Added email_validated property in model `Member`
+
+Revision ID: acf72cf31eea
+Revises: 6fd4c15b8a7b
+Create Date: 2020-07-21 20:29:44.876704
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'acf72cf31eea'
+down_revision = '6fd4c15b8a7b'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('member', sa.Column('email_confirmed', sa.Boolean(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('member', 'email_confirmed')
+    # ### end Alembic commands ###