diff --git a/symfony/mailersend-mailer/6.3/manifest.json b/symfony/mailersend-mailer/6.3/manifest.json
new file mode 100644
index 00000000..82b3c50a
--- /dev/null
+++ b/symfony/mailersend-mailer/6.3/manifest.json
@@ -0,0 +1,6 @@
+{
+    "env": {
+        "#1": "MAILER_DSN=mailersend+api://KEY@BASE_URL",
+        "#2": "MAILER_DSN=mailersend+smtp://USERNAME:PASSWORD@default"
+    }
+}