diff --git a/installer.cfg b/installer.cfg
index 5226a35..326bac6 100644
--- a/installer.cfg
+++ b/installer.cfg
@@ -4,8 +4,8 @@ tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
 
 [database]
 # Select database engine : postgres or mysql
-engine = postgres
-#engine = mysql
+#engine = postgres
+engine = mysql
 host = 127.0.0.1
 install = true
 
@@ -28,6 +28,8 @@ dbuser = modoboa
 dbpassword = password
 # Extensions to install (to install all of them, use: all)
 extensions = modoboa-amavis modoboa-pdfcredentials modoboa-postfix-autoreply modoboa-sievefilters modoboa-stats modoboa-webmail
+# Deploy Modoboa and enable development mode
+devmode = false
 
 [amavis]
 enabled = true
diff --git a/modoboa_installer/scripts/modoboa.py b/modoboa_installer/scripts/modoboa.py
index 89c5b12..d2c8175 100644
--- a/modoboa_installer/scripts/modoboa.py
+++ b/modoboa_installer/scripts/modoboa.py
@@ -34,6 +34,7 @@ class Modoboa(base.Installer):
         self.venv_path = config.get("modoboa", "venv_path")
         self.instance_path = config.get("modoboa", "instance_path")
         self.extensions = config.get("modoboa", "extensions").split()
+        self.devmode = config.getboolean("modoboa", "devmode")
 
     def _setup_venv(self):
         """Prepare a dedicated virtuelenv."""
@@ -44,6 +45,11 @@ class Modoboa(base.Installer):
         else:
             packages.append("MYSQL-Python")
         python.install_packages(packages, self.venv_path, sudo_user=self.user)
+        if self.devmode:
+            # FIXME: use dev-requirements instead
+            python.install_packages(
+                ["django-bower", "django-debug-toolbar"], self.venv_path,
+                sudo_user=self.user)
 
     def _deploy_instance(self):
         """Deploy Modoboa."""
@@ -71,6 +77,8 @@ class Modoboa(base.Installer):
                 self.config.get("database", "engine"), self.dbname,
                 self.dbpasswd, self.dbhost)
         ]
+        if self.devmode:
+            args = ["--devel"] + args
         if self.config.getboolean("amavis", "enabled"):
             args += [
                 "amavis:{}://{}:{}@{}/{}".format(