diff --git a/config/packages/swiftmailer.yaml b/config/packages/swiftmailer.yaml
index c06f0bd..87de321 100644
--- a/config/packages/swiftmailer.yaml
+++ b/config/packages/swiftmailer.yaml
@@ -1,4 +1,4 @@
 swiftmailer:
     url: '%env(MAILER_URL)%'
     spool: { type: 'memory' }
-    sender_address: system@localhost
+    sender_address: '%env(MAILER_SENDER)%'