diff --git a/apps/pwa/src/routes/SetupPage.tsx b/apps/pwa/src/routes/SetupPage.tsx
index fcb9c5b..92f7757 100644
--- a/apps/pwa/src/routes/SetupPage.tsx
+++ b/apps/pwa/src/routes/SetupPage.tsx
@@ -772,7 +772,7 @@ function Step3Credential({ onBack, onSuccess, onLocked, stepHeadingRef }: Step3P
     if (saveDisabled) return;
     setValidationState('idle');
     setCredentialVerified(false);
-    completeMutation.mutate({ fastmailEmail: email, appPassword: password });
+    completeMutation.mutate({ fastmailEmail: email.trim(), appPassword: password });
   }
 
   function handleComplete() {