diff --git a/apps/stalwart/README.md b/apps/stalwart/README.md
index 3224a99..0709b9f 100644
--- a/apps/stalwart/README.md
+++ b/apps/stalwart/README.md
@@ -42,6 +42,7 @@ After deployment, log in at https://mail.basicstack.de with:
 ## Configuration
 
 All configuration is done via the web UI or API. The bootstrap config only points to the RocksDB database location. NO config.toml files are used.
+Check https://stalw.art/docs/ref/ for configuration possibilities.
 
 ## Ports