diff --git a/DOCS.md b/DOCS.md
index 0f25e24..9045f99 100644
--- a/DOCS.md
+++ b/DOCS.md
@@ -17,7 +17,7 @@ You can configure the plugin using the following parameters:
 * **subject** - The subject line template
 * **body** - The email body template
 * **attachment** - An optional file to attach to the sent mail(s), can be an absolute path or relative to the working directory.
-* **evaluate** - An optional expression to evaluate (on the fly) whether the mail should be sent or not.
+* **evaluate** - An optional expression to evaluate (on the fly) whether the mail should be sent or not ([https://woodpecker-ci.org/docs/next/usage/pipeline-syntax#evaluate](https://woodpecker-ci.org/docs/next/usage/pipeline-syntax#evaluate)).
 
 ## Example