diff --git a/config/packages/mailer.yaml b/config/packages/mailer.yaml
index 56a650d..4a7c321 100644
--- a/config/packages/mailer.yaml
+++ b/config/packages/mailer.yaml
@@ -1,3 +1,4 @@
 framework:
     mailer:
         dsn: '%env(MAILER_DSN)%'
+        ping_threshold: 10