diff --git a/src/lib/services/document-signing-emails.service.ts b/src/lib/services/document-signing-emails.service.ts
index 4d69c16e..a78d9571 100644
--- a/src/lib/services/document-signing-emails.service.ts
+++ b/src/lib/services/document-signing-emails.service.ts
@@ -131,9 +131,14 @@ export interface SigningCompletedArgs {
  * Risk #5 - fixing this mapping prevents an `approver` invite from
  * landing on `/sign/error`.
  */
-const ROLE_TO_URL_SEGMENT: Record<SignerRole, 'client' | 'cc' | 'developer' | 'witness'> = {
+const ROLE_TO_URL_SEGMENT: Record<string, 'client' | 'cc' | 'developer' | 'witness'> = {
   client: 'client',
   developer: 'developer',
+  // `document_signers.signer_role` persists Documenso's normalized role, so
+  // the order-2 EOI developer arrives here as 'signer' (not 'developer').
+  // Without this alias the lookup returned `undefined` and the branded link
+  // became `…/sign/undefined/<token>` (dead). Map it to the developer page.
+  signer: 'developer',
   approver: 'cc',
   witness: 'witness',
   other: 'cc',
@@ -155,7 +160,9 @@ export function transformSigningUrl(
   // Trim trailing slashes off the host so we always produce a clean
   // single `/` between segments.
   const host = embeddedSigningHost.replace(/\/+$/, '');
-  const urlRole = ROLE_TO_URL_SEGMENT[signerRole];
+  // Fall back to the passive `cc` page for any unrecognised role rather than
+  // ever emitting `…/sign/undefined/<token>`.
+  const urlRole = ROLE_TO_URL_SEGMENT[signerRole] ?? 'cc';
   return `${host}/sign/${urlRole}/${token}`;
 }
 
diff --git a/src/lib/services/documents.service.ts b/src/lib/services/documents.service.ts
index 04bea46b..e143a4b0 100644
--- a/src/lib/services/documents.service.ts
+++ b/src/lib/services/documents.service.ts
@@ -46,6 +46,7 @@ import {
   sendSigningInvitation,
   sendSigningCompleted,
   sendSigningStatusNotification,
+  transformSigningUrl,
   type SignerRole,
 } from '@/lib/services/document-signing-emails.service';
 import {
@@ -1063,10 +1064,23 @@ export async function uploadSignedManually(
 export async function listDocumentSigners(documentId: string, portId: string) {
   await getDocumentById(documentId, portId); // verify access
 
-  return db.query.documentSigners.findMany({
+  const rows = await db.query.documentSigners.findMany({
     where: eq(documentSigners.documentId, documentId),
     orderBy: (ds, { asc }) => [asc(ds.signingOrder)],
   });
+
+  // Surface the BRANDED marketing-site embed URL (the same wrap the
+  // invitation email applies) rather than the bare Documenso link, so the
+  // EOI tab's "Copy link" shares the on-brand signing page. No-op when the
+  // port has no embeddedSigningHost configured (transformSigningUrl returns
+  // the raw URL unchanged).
+  const { embeddedSigningHost } = await getPortDocumensoConfig(portId);
+  return rows.map((r) => ({
+    ...r,
+    signingUrl: r.signingUrl
+      ? transformSigningUrl(r.signingUrl, embeddedSigningHost, r.signerRole as SignerRole)
+      : r.signingUrl,
+  }));
 }
 
 // ─── List Events ──────────────────────────────────────────────────────────────
diff --git a/tests/unit/services/document-signing-urls.test.ts b/tests/unit/services/document-signing-urls.test.ts
index 181a0129..b91672a0 100644
--- a/tests/unit/services/document-signing-urls.test.ts
+++ b/tests/unit/services/document-signing-urls.test.ts
@@ -44,6 +44,21 @@ describe('transformSigningUrl', () => {
     );
   });
 
+  it("maps 'signer' (Documenso's persisted order-2 role) → /sign/developer/<token>", () => {
+    // document_signers.signer_role stores Documenso's normalized role, so the
+    // EOI developer arrives as 'signer'. Regression: this used to fall through
+    // to `undefined` → dead `…/sign/undefined/<token>` invitation links.
+    expect(transformSigningUrl(RAW, HOST, 'signer' as never)).toBe(
+      'https://portnimara.com/sign/developer/vbT8hi3jKQmrFP_LN1WcS',
+    );
+  });
+
+  it('falls back to /sign/cc/<token> for any unrecognised role (never undefined)', () => {
+    expect(transformSigningUrl(RAW, HOST, 'mystery-role' as never)).toBe(
+      'https://portnimara.com/sign/cc/vbT8hi3jKQmrFP_LN1WcS',
+    );
+  });
+
   it('maps witness → /sign/witness/<token>', () => {
     expect(transformSigningUrl(RAW, HOST, 'witness')).toBe(
       'https://portnimara.com/sign/witness/vbT8hi3jKQmrFP_LN1WcS',