diff --git a/app/api/debug-email/route.ts b/app/api/debug-email/route.ts
index 41dde05..8c75e36 100644
--- a/app/api/debug-email/route.ts
+++ b/app/api/debug-email/route.ts
@@ -42,6 +42,9 @@ export async function GET(request: Request) {
       if (!source) {
         return NextResponse.json({ error: 'Email source not available' }, { status: 404 });
       }
+      if (!envelope) {
+        return NextResponse.json({ error: 'Email envelope not available' }, { status: 404 });
+      }
       const rawSource = source.toString();
       
       // Parse the email with multiple options to debug