diff --git a/scripts/postinstall.sh b/scripts/postinstall.sh
index 7fc3afaf011d53afcd729b464c538884d3d560bb..4117fa48c6f0de7261b8ba3e64593f7b5a981493 100755
--- a/scripts/postinstall.sh
+++ b/scripts/postinstall.sh
@@ -75,6 +75,10 @@ mkdir -p "/mnt/repo-base/volumes/nextcloud/data/rainloop-storage/_data_/_default
 echo "$ADD_DOMAINS" | tr "," "\n" | while read add_domain; do
     cp "templates/rainloop/domain-config.ini" "/mnt/repo-base/volumes/nextcloud/data/rainloop-storage/_data_/_default_/domains/$add_domain.ini"
 done
+
+mkdir "/mnt/repo-base/volumes/nextcloud/data/rainloop-storage/_data_/_default_/configs/"
+cat templates/rainloop/application.ini | sed "s/@@@DOMAIN@@@/$DOMAIN/g" > "/mnt/repo-base/volumes/nextcloud/data/rainloop-storage/_data_/_default_/configs/application.ini"
+
 chown www-data:www-data /mnt/repo-base/volumes/nextcloud/ -R
 
 echo "Creating postfix database schema"
diff --git a/templates/rainloop/application.ini b/templates/rainloop/application.ini
new file mode 100644
index 0000000000000000000000000000000000000000..486ec0c66030c0f43467b56ee858e71bc67941b2
--- /dev/null
+++ b/templates/rainloop/application.ini
@@ -0,0 +1,7 @@
+[webmail]
+title = "Email - /e/"
+theme = "Clear"
+
+[login]
+default_domain = "@@@DOMAIN@@@"
+