diff --git a/README.md b/README.md
index d022166..930d1ce 100644
--- a/README.md
+++ b/README.md
@@ -27,9 +27,7 @@ Default login is `wallabag:wallabag`.
 - `-e SYMFONY__ENV__DATABASE_TABLE_PREFIX=...` (defaults to "wallabag_". Specifies the prefix for each database table)
 - `-e SYMFONY__ENV__SECRET=...` (defaults to "ovmpmAWXRCabNlMgzlzFXDYmCFfzGv")
 - `-e SYMFONY__ENV__LOCALE=...` (default to en)
-- `-e SYMFONY__ENV__MAILER_HOST=...`  (defaults to "127.0.0.1", the SMTP host)
-- `-e SYMFONY__ENV__MAILER_USER=...` (defaults to "~", the SMTP user)
-- `-e SYMFONY__ENV__MAILER_PASSWORD=...`(defaults to "~", the SMTP password)
+- `-e SYMFONY__ENV__MAILER_DSN=...`  (defaults to "smtp://127.0.0.1")
 - `-e SYMFONY__ENV__FROM_EMAIL=...`(defaults to "`wallabag@example.com`", the address wallabag uses for outgoing emails)
 - `-e SYMFONY__ENV__TWOFACTOR_AUTH=...` (defaults to "true", enable or disable two-factor authentication)
 - `-e SYMFONY__ENV__TWOFACTOR_SENDER=...` (defaults to "`no-reply@wallabag.org`", the address wallabag uses for two-factor emails)
@@ -125,9 +123,7 @@ services:
       - SYMFONY__ENV__DATABASE_PASSWORD=wallapass
       - SYMFONY__ENV__DATABASE_CHARSET=utf8mb4
       - SYMFONY__ENV__DATABASE_TABLE_PREFIX="wallabag_"
-      - SYMFONY__ENV__MAILER_HOST=127.0.0.1
-      - SYMFONY__ENV__MAILER_USER=~
-      - SYMFONY__ENV__MAILER_PASSWORD=~
+      - SYMFONY__ENV__MAILER_DSN=smtp://127.0.0.1
       - SYMFONY__ENV__FROM_EMAIL=wallabag@example.com
       - SYMFONY__ENV__DOMAIN_NAME=https://your-wallabag-instance.wallabag.org
       - SYMFONY__ENV__SERVER_NAME="Your wallabag instance"
diff --git a/root/entrypoint.sh b/root/entrypoint.sh
index 4215110..5aadb12 100755
--- a/root/entrypoint.sh
+++ b/root/entrypoint.sh
@@ -33,7 +33,8 @@ provisioner() {
     fi
 
     # Configure SQLite database
-    if [ "$SYMFONY__ENV__DATABASE_DRIVER" = "pdo_sqlite" ] && [ ! -f "/var/www/wallabag/data/db/wallabag.sqlite" ] ; then
+    SQLITE_FILE_SIZE=$(wc -c "/var/www/wallabag/data/db/wallabag.sqlite" | awk '{print $1}')
+    if [ "$SYMFONY__ENV__DATABASE_DRIVER" = "pdo_sqlite" ] && ([ ! -f "/var/www/wallabag/data/db/wallabag.sqlite" ] || [ "$SQLITE_FILE_SIZE" = 0 ]) ; then
         echo "Configuring the SQLite database ..."
         install_wallabag
     fi
@@ -87,9 +88,9 @@ provisioner() {
 }
 
 if [ "$COMMAND_ARG1" = "wallabag" ]; then
-    echo "Starting Wallabag ..."
+    echo "Starting wallabag ..."
     provisioner
-    echo "Wallabag is ready!"
+    echo "wallabag is ready!"
     exec s6-svscan /etc/s6/
 fi
 
diff --git a/root/etc/wallabag/parameters.template.yml b/root/etc/wallabag/parameters.template.yml
index 7a55ae5..826b551 100644
--- a/root/etc/wallabag/parameters.template.yml
+++ b/root/etc/wallabag/parameters.template.yml
@@ -12,13 +12,7 @@ parameters:
 
     domain_name: ${SYMFONY__ENV__DOMAIN_NAME:-https://your-wallabag-instance.wallabag.org}
 
-    mailer_transport: ${SYMFONY__ENV__MAILER_TRANSPORT:-smtp}
-    mailer_user: ${SYMFONY__ENV__MAILER_USER:-~}
-    mailer_password: ${SYMFONY__ENV__MAILER_PASSWORD:-~}
-    mailer_host: ${SYMFONY__ENV__MAILER_HOST:-127.0.0.1}
-    mailer_port: ${SYMFONY__ENV__MAILER_PORT:-25}
-    mailer_encryption: ${SYMFONY__ENV__MAILER_ENCRYPTION:-~}
-    mailer_auth_mode: ${SYMFONY__ENV__MAILER_AUTH_MODE:-~}
+    mailer_dsn: ${SYMFONY__ENV__MAILER_DSN:-smtp://127.0.0.1}
 
     locale: ${SYMFONY__ENV__LOCALE:-en}