diff --git a/App/pelagia-portal/lib/notifier.ts b/App/pelagia-portal/lib/notifier.ts
index 7878734..8b38ac3 100644
--- a/App/pelagia-portal/lib/notifier.ts
+++ b/App/pelagia-portal/lib/notifier.ts
@@ -109,11 +109,36 @@ function buildInAppBody(
 }
 
 function buildInAppLink(
-  _event: NotificationEvent,
+  event: NotificationEvent,
   po: PurchaseOrder & { submitter: User },
-  _recipient: User
+  recipient: User
 ): string {
-  return `/po/${po.id}`;
+  const isManager   = recipient.role === "MANAGER" || recipient.role === "SUPERUSER";
+  const isAccounts  = recipient.role === "ACCOUNTS";
+  const isSubmitter = recipient.id === po.submitterId;
+
+  switch (event) {
+    // Manager needs to act on the approval queue
+    case "PO_SUBMITTED":
+    case "VENDOR_ID_PROVIDED":
+      return isManager ? `/approvals/${po.id}` : `/po/${po.id}`;
+
+    // Accounts needs to process payment; everyone else sees the PO
+    case "PO_APPROVED":
+    case "PO_APPROVED_WITH_NOTE":
+      return isAccounts ? `/payments` : `/po/${po.id}`;
+
+    // Submitter needs to open the edit form
+    case "EDITS_REQUESTED":
+      return isSubmitter ? `/po/${po.id}/edit` : `/po/${po.id}`;
+
+    // Submitter needs to confirm receipt
+    case "PAYMENT_SENT":
+      return isSubmitter ? `/po/${po.id}/receipt` : `/po/${po.id}`;
+
+    default:
+      return `/po/${po.id}`;
+  }
 }
 
 // ── Email subject ─────────────────────────────────────────────────────────────