diff --git a/.gitignore b/.gitignore
index 2cba99d87..3505a1411 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,8 @@ bin
 include
 lib
 .Python
-tests/
 .envrc
-__pycache__
\ No newline at end of file
+__pycache__
+.git
+.env
+.idea
diff --git a/server.py b/server.py
index 4084baeac..95b8359e9 100644
--- a/server.py
+++ b/server.py
@@ -17,6 +17,10 @@ def loadCompetitions():
 app = Flask(__name__)
 app.secret_key = 'something_special'
 
+
+if __name__ == '__main__':
+    app.run(debug=True)
+
 competitions = loadCompetitions()
 clubs = loadClubs()
 
@@ -24,10 +28,18 @@ def loadCompetitions():
 def index():
     return render_template('index.html')
 
-@app.route('/showSummary',methods=['POST'])
+@app.route('/showSummary', methods=['POST'])
 def showSummary():
-    club = [club for club in clubs if club['email'] == request.form['email']][0]
-    return render_template('welcome.html',club=club,competitions=competitions)
+    email = request.form['email']
+    club_trouve = None
+    for club in clubs:
+        if club['email'] == email:
+            club_trouve = club
+            break
+    if club_trouve is None:
+        flash("Sorry, the email is not registered in the database")
+        return redirect(url_for('index'))
+    return render_template('welcome.html', club=club_trouve, competitions=competitions)
 
 
 @app.route('/book/<competition>/<club>')
diff --git a/templates/index.html b/templates/index.html
index 926526b7d..4e97d083c 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -12,5 +12,15 @@ <h1>Welcome to the GUDLFT Registration Portal!</h1>
         <input type="email" name="email" id=""/>
         <button type="submit">Enter</button>
     </form>
+
+    {% with messages = get_flashed_messages() %}
+        {% if messages %}
+            <ul style="color: red; font-weight: bold; background: #ffeeee; padding: 10px; border: 2px solid red; list-style: none;">
+                {% for message in messages %}
+                    <li>{{ message }}</li>
+                {% endfor %}
+            </ul>
+        {% endif %}
+    {% endwith %}
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/integration/test_email_integration.py b/tests/integration/test_email_integration.py
new file mode 100644
index 000000000..ffa57a1c7
--- /dev/null
+++ b/tests/integration/test_email_integration.py
@@ -0,0 +1,43 @@
+import os
+import sys
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..')))
+from server import app
+import pytest
+
+
+@pytest.fixture
+def client():
+    app.config['TESTING'] = True
+    with app.test_client() as client:
+        yield client
+
+
+def test_email_invalide(client):
+    response = client.post(
+        '/showSummary',
+        data={'email': 'fabien@test.com'},
+        follow_redirects=True
+    )
+    assert response.status_code == 200
+
+    page = response.data.decode('utf-8')
+
+    assert "Sorry" in page
+    assert "the email is not registered in the database" in page
+
+    print("[ERREUR] Email invalide → message bien affiché")
+
+
+def test_email_valide(client):
+    response = client.post(
+        '/showSummary',
+        data={'email': 'admin@irontemple.com'},
+        follow_redirects=True
+    )
+    assert response.status_code == 200
+
+    page = response.data.decode('utf-8')
+    assert "Welcome, admin@irontemple.com" in page
+    assert "Désolé" not in page
+
+    print("[SUCCÈS] Email valide → connexion OK")
diff --git a/tests/unit/test_email_logic.py b/tests/unit/test_email_logic.py
new file mode 100644
index 000000000..0e83d32a1
--- /dev/null
+++ b/tests/unit/test_email_logic.py
@@ -0,0 +1,30 @@
+import pytest
+
+CLUBS = [
+    {"name": "Iron Temple", "email": "admin@irontemple.com", "points": "4"},
+    {"name": "Simply Lift", "email": "john@simplylift.co", "points": "13"}
+]
+
+
+def rechercher_email(email):
+    for club in CLUBS:
+        if club['email'] == email:
+            return club
+    return None
+
+
+def test_email_pas_trouve():
+    result = rechercher_email("fabien@faux.com")
+    assert result is None
+    print("[ERREUR] Email invalide")
+
+
+def test_email_trouve():
+    result = rechercher_email("admin@irontemple.com")
+    assert result is not None
+    assert result["name"] == "Iron Temple"
+    print("[SUCCÈS] Email valide")
+
+
+
+