diff --git a/App/.env.example b/App/.env.example
index 3f98d6d..e4a3b60 100644
--- a/App/.env.example
+++ b/App/.env.example
@@ -56,6 +56,16 @@ GST_SERVICE_URL=http://localhost:3003
 # validated against a real session first). Aadhaar is NOT handled here (manual).
 EPFO_SERVICE_URL=http://localhost:3004
 
+# ── PDF render microservice ("Email PO to vendor", issue #14) ──
+# Run the PdfService/ microservice alongside the app (default localhost:3005).
+# Start with: cd PdfService && npm install && npm run dev
+# PDF_SERVICE_TOKEN is a shared secret: the app puts it on the export URL and
+# PdfService echoes it in the x-pdf-token header. APP_INTERNAL_URL is the base URL
+# PdfService can reach the app at (falls back to NEXTAUTH_URL).
+PDF_SERVICE_URL=http://localhost:3005
+PDF_SERVICE_TOKEN=dev-pdf-token-change-me
+# APP_INTERNAL_URL=http://localhost:3000
+
 # ── Forgejo issue reporting (Report Issue button) ─────────────
 # Token needs write:issue scope on the repo below.
 FORGEJO_URL=https://git.pelagiamarine.com
diff --git a/App/CLAUDE.md b/App/CLAUDE.md
index 72a6d13..ef0a9e7 100644
--- a/App/CLAUDE.md
+++ b/App/CLAUDE.md
@@ -118,6 +118,12 @@ When Accounts records a payment, a **compulsory payment date** is captured (`Pur
 
 `Vendor` carries `isVerified`, `gstin`, `pincode` + `latitude`/`longitude` (geocoded for vendor-distance sorting from a Site), and a `VendorContact[]` list. **Submitters can create vendors** (permission `create_vendor`) but they are created **unverified**; a vendor becomes verified when a PO is closed/paid with it, on import, or when a Manager/Accounts/Admin runs `verifyVendor`. Only `manage_vendors` holders may assign a `vendorId` (the formal verified code).
 
+### Email PO to vendor (issue #14)
+
+An **Email to vendor** button on the PO detail (`po-detail.tsx`, available once the PO is approved — `MGR_APPROVED` through `CLOSED`, and again after payment — when the vendor has a primary-contact email) opens an **Outlook draft** addressed to that contact with a **time-limited PDF download link** in the body. The user reviews and sends it.
+
+The pipeline (no mailto attachment — `mailto:` can't carry files): `prepareVendorEmail(poId)` (`po/[id]/email-actions.ts`) → `renderPoPdf` (`lib/pdf-service.ts`) → **PdfService** (a standalone Express + Playwright microservice, the GstService/EpfoService pattern) renders the existing `/api/po/[id]/export?format=pdf&pdf=1` page to a real PDF via headless Chromium → `uploadBuffer` to R2 (`po-pdf/…`) → `generateDownloadUrl` (presigned, **7-day** TTL) → returns a `mailto:` with the link. The export route accepts a server-only `svc` token (`PDF_SERVICE_TOKEN`) so PdfService can fetch the page without a user session, and `pdf=1` drops the on-screen print button + `window.print()` auto-trigger. Gated by `PDF_SERVICE_URL`/`PDF_SERVICE_TOKEN` — if unset the action returns a friendly "not configured" error. **No new DB model/migration.**
+
 ### Inventory (feature-flagged)
 
 Inventory (`ItemInventory`, keyed by `productId` + `siteId`) is **incremented at PO approval** — not on close — for the ordered quantities, when the PO has a `siteId`. The whole inventory surface (site stock, consumption) is gated by `NEXT_PUBLIC_INVENTORY_ENABLED` (see `lib/feature-flags.ts`); the vendor/product catalogue used for PO creation stays available regardless.
@@ -239,6 +245,9 @@ FORGEJO_URL, FORGEJO_REPO, FORGEJO_TOKEN
 
 GST_SERVICE_URL         # GstService microservice (defaults to localhost:3003)
 EPFO_SERVICE_URL        # EpfoService microservice for UAN lookup (defaults to localhost:3004)
+PDF_SERVICE_URL         # PdfService microservice for PO→PDF render (defaults to localhost:3005)
+PDF_SERVICE_TOKEN       # Shared secret for PdfService ↔ export-route auth ("Email to vendor")
+APP_INTERNAL_URL        # Base URL PdfService reaches the app at (falls back to NEXTAUTH_URL)
 NEXT_PUBLIC_INVENTORY_ENABLED   # Inventory feature flag
 NEXT_PUBLIC_SUBMITTER_VIEW_ALL_ENABLED  # Opt-in ("true"): submitters (TECHNICAL/MANNING) read & export every PO + History (read-only)
 NEXT_PUBLIC_CREWING_ENABLED     # Crewing module feature flag (opt-in "true"; off by default)
diff --git a/App/app/(portal)/po/[id]/email-actions.ts b/App/app/(portal)/po/[id]/email-actions.ts
new file mode 100644
index 0000000..64c5c43
--- /dev/null
+++ b/App/app/(portal)/po/[id]/email-actions.ts
@@ -0,0 +1,83 @@
+"use server";
+
+import { auth } from "@/auth";
+import { db } from "@/lib/db";
+import { buildStorageKey, uploadBuffer, generateDownloadUrl } from "@/lib/storage";
+import { renderPoPdf, isPdfServiceConfigured, PdfServiceError } from "@/lib/pdf-service";
+
+type Result = { ok: true; mailto: string; to: string } | { error: string };
+
+// PO must be approved (a valid document) before it can be emailed to a vendor;
+// available through every later state, incl. once payment is recorded (issue #14).
+const EMAILABLE = ["MGR_APPROVED", "SENT_FOR_PAYMENT", "PARTIALLY_PAID", "PAID_DELIVERED", "PARTIALLY_CLOSED", "CLOSED"];
+const VIEW_ALL_ROLES = ["ACCOUNTS", "MANAGER", "SUPERUSER", "AUDITOR", "ADMIN"];
+const LINK_TTL_SECONDS = 7 * 24 * 60 * 60; // 7 days
+
+/**
+ * Build an "email this PO to the vendor" Outlook draft: render the PO to a PDF,
+ * store it (R2), and return a mailto: addressed to the vendor's primary contact
+ * with a time-limited download link in the body. The user reviews & sends it.
+ */
+export async function prepareVendorEmail(poId: string): Promise<Result> {
+  const session = await auth();
+  if (!session?.user) return { error: "Unauthorized" };
+
+  const po = await db.purchaseOrder.findUnique({
+    where: { id: poId },
+    include: {
+      company: { select: { name: true } },
+      vendor: { include: { contacts: { where: { isPrimary: true }, take: 1 } } },
+    },
+  });
+  if (!po) return { error: "PO not found" };
+
+  const canView = VIEW_ALL_ROLES.includes(session.user.role) || po.submitterId === session.user.id;
+  if (!canView) return { error: "You cannot access this purchase order." };
+
+  if (!EMAILABLE.includes(po.status)) {
+    return { error: "The PO must be approved before it can be emailed to the vendor." };
+  }
+
+  const to = po.vendor?.contacts?.[0]?.email?.trim();
+  if (!to) {
+    return { error: "The vendor has no primary contact email. Add one on the vendor before emailing." };
+  }
+
+  if (!isPdfServiceConfigured()) {
+    return { error: "PDF emailing is not configured on this environment." };
+  }
+
+  // Render → store → presigned link.
+  let link: string;
+  try {
+    const pdf = await renderPoPdf(poId);
+    const slug = po.poNumber.replace(/\//g, "-");
+    const key = buildStorageKey("po-pdf", poId, `${slug}.pdf`);
+    await uploadBuffer(key, pdf, "application/pdf");
+    link = await generateDownloadUrl(key, LINK_TTL_SECONDS);
+  } catch (e) {
+    if (e instanceof PdfServiceError) return { error: `Could not generate the PO PDF: ${e.message}` };
+    return { error: "Could not generate the PO PDF." };
+  }
+
+  const company = po.company?.name ?? "Pelagia Marine Services Pvt. Ltd.";
+  const vendorName = po.vendor?.contacts?.[0]?.name || po.vendor?.name || "Sir/Madam";
+  const sender = session.user.name ?? "";
+
+  const subject = `Purchase Order ${po.poNumber}`;
+  const body = [
+    `Dear ${vendorName},`,
+    "",
+    `Please find our Purchase Order ${po.poNumber} at the link below:`,
+    link,
+    "",
+    "(The link is valid for 7 days.)",
+    "",
+    "Regards,",
+    sender,
+    company,
+  ].join("\n");
+
+  const mailto = `mailto:${encodeURIComponent(to)}?subject=${encodeURIComponent(subject)}&body=${encodeURIComponent(body)}`;
+  return { ok: true, mailto, to };
+}
diff --git a/App/app/(portal)/po/[id]/page.tsx b/App/app/(portal)/po/[id]/page.tsx
index cb5cabd..d780594 100644
--- a/App/app/(portal)/po/[id]/page.tsx
+++ b/App/app/(portal)/po/[id]/page.tsx
@@ -28,7 +28,7 @@ export default async function PoDetailPage({ params }: Props) {
       submitter: true,
       vessel: true,
       account: true,
-      vendor: true,
+      vendor: { include: { contacts: { where: { isPrimary: true }, take: 1 } } },
       lineItems: { orderBy: { sortOrder: "asc" } },
       documents: { orderBy: { uploadedAt: "desc" } },
       actions: { include: { actor: true }, orderBy: { createdAt: "asc" } },
@@ -57,9 +57,11 @@ export default async function PoDetailPage({ params }: Props) {
     ? await db.vendor.findMany({ where: { isActive: true }, orderBy: { name: "asc" } })
     : [];
 
+  const vendorEmail = po.vendor?.contacts?.[0]?.email ?? null;
+
   return (
     <div className="max-w-6xl space-y-6">
-      <PoDetail po={po} currentUserId={session.user.id} currentRole={session.user.role} />
+      <PoDetail po={po} currentUserId={session.user.id} currentRole={session.user.role} vendorEmail={vendorEmail} />
       {canProvideVendorId && <VendorIdForm poId={po.id} vendors={vendors} />}
     </div>
   );
diff --git a/App/app/api/po/[id]/export/route.ts b/App/app/api/po/[id]/export/route.ts
index 41e895e..403883a 100644
--- a/App/app/api/po/[id]/export/route.ts
+++ b/App/app/api/po/[id]/export/route.ts
@@ -51,8 +51,14 @@ async function fetchImage(key: string | null | undefined): Promise<EmbeddedImage
 interface Props { params: Promise<{ id: string }> }
 
 export async function GET(request: NextRequest, { params }: Props) {
+  // PdfService renders this page to a real PDF (issue #14). It authenticates with
+  // a short, server-only token instead of a user session — read-only, PDF only.
+  const svcToken = request.nextUrl.searchParams.get("svc");
+  const isService =
+    !!svcToken && !!process.env.PDF_SERVICE_TOKEN && svcToken === process.env.PDF_SERVICE_TOKEN;
+
   const session = await auth();
-  if (!session?.user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  if (!session?.user && !isService) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
 
   const { id } = await params;
   const po = await db.purchaseOrder.findUnique({
@@ -67,10 +73,12 @@ export async function GET(request: NextRequest, { params }: Props) {
   });
   if (!po) return NextResponse.json({ error: "Not found" }, { status: 404 });
 
-  // view_all_pos holders, or submitters when the view-all feature flag is on, may export
-  // any PO; everyone else only their own.
-  if (!canViewAllPos(session.user.role) && po.submitterId !== session.user.id) {
-    return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+  if (!isService) {
+    // view_all_pos holders, or submitters when the view-all feature flag is on, may export
+    // any PO; everyone else only their own. (PdfService bypasses this — read-only, PDF only.)
+    if (!canViewAllPos(session!.user.role) && po.submitterId !== session!.user.id) {
+      return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+    }
   }
 
   // Exports are available for approved POs (manager approval is a prerequisite for a valid PO
@@ -86,6 +94,9 @@ export async function GET(request: NextRequest, { params }: Props) {
   }
 
   const format = request.nextUrl.searchParams.get("format") ?? "pdf";
+  // pdf=1 → render a clean page for PdfService: no on-screen print button and no
+  // window.print() auto-trigger (Chromium's page.pdf() captures it directly).
+  const cleanPdf = request.nextUrl.searchParams.get("pdf") === "1";
 
   // ── Company data (from linked company, or fallback to constants) ──────────
   const co = po.company;
@@ -737,11 +748,11 @@ export async function GET(request: NextRequest, { params }: Props) {
 
 ${isCancelled ? `<div class="cancelled-watermark">CANCELLED</div>` : ""}
 
-<div class="no-print" style="margin-bottom:8px">
+${cleanPdf ? "" : `<div class="no-print" style="margin-bottom:8px">
   <button onclick="window.print()" style="padding:5px 14px;font-size:11px;cursor:pointer;border:1px solid #999;border-radius:4px">
     🖨 Print / Save as PDF
   </button>
-</div>
+</div>`}
 
 <!-- ── Header ─────────────────────────────────────────────────── -->
 <div class="header-band">
@@ -890,7 +901,7 @@ ${isCancelled ? `<div class="cancelled-watermark">CANCELLED</div>` : ""}
 <!-- ── Brand bar ─────────────────────────────────────────────── -->
 <div class="brand-bar"></div>
 
-<script>window.onload = function() { window.print(); };</script>
+${cleanPdf ? "" : `<script>window.onload = function() { window.print(); };</script>`}
 </body>
 </html>`;
 
diff --git a/App/components/po/email-vendor-button.tsx b/App/components/po/email-vendor-button.tsx
new file mode 100644
index 0000000..393c04e
--- /dev/null
+++ b/App/components/po/email-vendor-button.tsx
@@ -0,0 +1,40 @@
+"use client";
+
+import { useState } from "react";
+import { prepareVendorEmail } from "@/app/(portal)/po/[id]/email-actions";
+
+/**
+ * "Email to vendor" (issue #14): generates the PO PDF, stores it, and opens an
+ * Outlook (default mail client) draft addressed to the vendor's primary contact
+ * with a download link in the body. The user reviews and sends it themselves.
+ */
+export function EmailVendorButton({ poId }: { poId: string }) {
+  const [pending, setPending] = useState(false);
+  const [error, setError] = useState("");
+
+  async function handleClick() {
+    setPending(true);
+    setError("");
+    const result = await prepareVendorEmail(poId);
+    setPending(false);
+    if ("error" in result) {
+      setError(result.error);
+    } else {
+      // Opens the default mail client (Outlook) with a pre-filled draft.
+      window.location.href = result.mailto;
+    }
+  }
+
+  return (
+    <div className="inline-flex flex-col items-start gap-1">
+      <button
+        onClick={handleClick}
+        disabled={pending}
+        className="rounded-lg border border-neutral-300 bg-white px-3 py-2 text-sm font-medium text-neutral-700 hover:bg-neutral-50 disabled:opacity-60"
+      >
+        {pending ? "Preparing…" : "Email to vendor"}
+      </button>
+      {error && <span className="text-xs text-danger-700 max-w-xs">{error}</span>}
+    </div>
+  );
+}
diff --git a/App/components/po/po-detail.tsx b/App/components/po/po-detail.tsx
index 1b6ea8c..25a12f4 100644
--- a/App/components/po/po-detail.tsx
+++ b/App/components/po/po-detail.tsx
@@ -4,6 +4,7 @@ import { LineItemsEditor } from "@/components/po/po-line-items-editor";
 import { DiscardDraftButton } from "@/components/po/discard-draft-button";
 import { SubmitDraftButton } from "@/components/po/submit-draft-button";
 import { CancelPoButton, SupersedeForm } from "@/components/po/cancel-po-controls";
+import { EmailVendorButton } from "@/components/po/email-vendor-button";
 import { formatCurrency, formatDate, formatDateTime } from "@/lib/utils";
 import { generateDownloadUrl } from "@/lib/storage";
 import { groupAttachments } from "@/lib/attachments";
@@ -80,6 +81,8 @@ interface Props {
   currentUserId: string;
   currentRole: Role;
   readOnly?: boolean;
+  // Vendor's primary contact email — enables the "Email to vendor" action (issue #14).
+  vendorEmail?: string | null;
 }
 
 const ACTION_LABELS: Record<string, string> = {
@@ -102,7 +105,7 @@ const ACTION_LABELS: Record<string, string> = {
   SUPERSEDED: "Superseded",
 };
 
-export async function PoDetail({ po, currentUserId, currentRole, readOnly = false }: Props) {
+export async function PoDetail({ po, currentUserId, currentRole, readOnly = false, vendorEmail = null }: Props) {
   const lineItemsForEditor = po.lineItems.map((li) => ({
     name: li.name,
     description: li.description ?? undefined,
@@ -228,6 +231,11 @@ export async function PoDetail({ po, currentUserId, currentRole, readOnly = fals
               Export XLSX
             </a>
           </>)}
+          {/* Email to vendor — approved (not cancelled) + vendor has a contact email (issue #14) */}
+          {!readOnly && vendorEmail &&
+            ["MGR_APPROVED", "SENT_FOR_PAYMENT", "PARTIALLY_PAID", "PAID_DELIVERED", "PARTIALLY_CLOSED", "CLOSED"].includes(po.status) && (
+            <EmailVendorButton poId={po.id} />
+          )}
           {/* Cancel — MANAGER / SUPERUSER, from any non-cancelled state */}
           {po.status !== "CANCELLED" &&
             ["MANAGER", "SUPERUSER"].includes(currentRole) &&
diff --git a/App/lib/pdf-service.ts b/App/lib/pdf-service.ts
new file mode 100644
index 0000000..9c246ae
--- /dev/null
+++ b/App/lib/pdf-service.ts
@@ -0,0 +1,44 @@
+/**
+ * Client for PdfService (issue #14) — renders a PO's export page to a real PDF.
+ *
+ * The app's own /api/po/:id/export?format=pdf produces a print-styled HTML page;
+ * PdfService (headless Chromium) navigates to it and returns PDF bytes. We pass a
+ * short-lived service token so the export route serves the page without a user
+ * session. Configured via:
+ *   PDF_SERVICE_URL    — e.g. http://localhost:3005
+ *   PDF_SERVICE_TOKEN  — shared secret echoed by the export route
+ *   APP_INTERNAL_URL   — base URL PdfService can reach the app at (falls back to NEXTAUTH_URL)
+ */
+export class PdfServiceError extends Error {}
+
+export function isPdfServiceConfigured(): boolean {
+  return !!process.env.PDF_SERVICE_URL && !!process.env.PDF_SERVICE_TOKEN;
+}
+
+/** Render a PO to a PDF buffer via PdfService. Throws PdfServiceError on failure. */
+export async function renderPoPdf(poId: string): Promise<Buffer> {
+  const serviceUrl = process.env.PDF_SERVICE_URL;
+  const token = process.env.PDF_SERVICE_TOKEN;
+  if (!serviceUrl || !token) {
+    throw new PdfServiceError("PDF service is not configured.");
+  }
+
+  const appBase = (process.env.APP_INTERNAL_URL ?? process.env.NEXTAUTH_URL ?? "http://localhost:3000").replace(/\/$/, "");
+  const exportUrl = `${appBase}/api/po/${poId}/export?format=pdf&pdf=1&svc=${encodeURIComponent(token)}`;
+
+  let res: Response;
+  try {
+    res = await fetch(`${serviceUrl.replace(/\/$/, "")}/pdf`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json", "x-pdf-token": token },
+      body: JSON.stringify({ url: exportUrl }),
+    });
+  } catch (e) {
+    throw new PdfServiceError(`PDF service unreachable: ${String(e)}`);
+  }
+
+  if (!res.ok) {
+    throw new PdfServiceError(`PDF service returned ${res.status}`);
+  }
+  return Buffer.from(await res.arrayBuffer());
+}
diff --git a/App/lib/storage.ts b/App/lib/storage.ts
index ecc645b..0d6e687 100644
--- a/App/lib/storage.ts
+++ b/App/lib/storage.ts
@@ -46,7 +46,7 @@ export async function generateDownloadUrl(
 export function buildStorageKey(
   // Crewing adds "cv" (Phase 3a); "crew-document" / "contract" follow in later
   // phases — see Crewing-Implementation-Spec §4.5.
-  type: "po-document" | "receipt" | "cv" | "crew-document" | "contract",
+  type: "po-document" | "receipt" | "cv" | "crew-document" | "contract" | "po-pdf",
   ownerId: string,
   fileName: string
 ): string {
diff --git a/App/tests/integration/email-vendor.test.ts b/App/tests/integration/email-vendor.test.ts
new file mode 100644
index 0000000..62f8634
--- /dev/null
+++ b/App/tests/integration/email-vendor.test.ts
@@ -0,0 +1,134 @@
+/**
+ * Integration tests for prepareVendorEmail (issue #14) — the "Email to vendor"
+ * action that renders the PO PDF, stores it, and returns an Outlook mailto draft
+ * with a download link. PdfService + storage are mocked (no Chromium / R2).
+ */
+import { vi, describe, it, expect, beforeAll, afterEach, afterAll } from "vitest";
+
+vi.mock("@/auth", () => ({ auth: vi.fn() }));
+vi.mock("@/lib/pdf-service", () => ({
+  renderPoPdf: vi.fn(async () => Buffer.from("%PDF-1.4 fake")),
+  isPdfServiceConfigured: vi.fn(() => true),
+  PdfServiceError: class PdfServiceError extends Error {},
+}));
+vi.mock("@/lib/storage", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("@/lib/storage")>();
+  return {
+    ...actual,
+    uploadBuffer: vi.fn(async () => {}),
+    generateDownloadUrl: vi.fn(async () => "https://files.example/po.pdf?sig=abc"),
+  };
+});
+
+import { auth } from "@/auth";
+import { db } from "@/lib/db";
+import { prepareVendorEmail } from "@/app/(portal)/po/[id]/email-actions";
+import { isPdfServiceConfigured } from "@/lib/pdf-service";
+import { makeSession, getSeedUser, getSeedVessel, getSeedAccount } from "./helpers";
+
+const PREFIX = "INTTEST_EMAILVENDOR_";
+let techId: string;
+let vesselId: string;
+let accountId: string;
+let vendorWithEmailId: string;
+let vendorNoEmailId: string;
+
+const as = (userId: string, role: "TECHNICAL" | "MANAGER") =>
+  vi.mocked(auth as unknown as () => Promise<unknown>).mockResolvedValue(makeSession(userId, role));
+
+async function makePo(status: string, vendorId: string): Promise<string> {
+  const po = await db.purchaseOrder.create({
+    data: {
+      poNumber: `${PREFIX}${status}-${Date.now()}-${Math.round(Math.random() * 1e6)}`,
+      title: `${PREFIX}PO`,
+      status: status as never,
+      totalAmount: 1000,
+      currency: "INR",
+      vesselId,
+      accountId,
+      submitterId: techId,
+      vendorId,
+    },
+  });
+  return po.id;
+}
+
+beforeAll(async () => {
+  const [tech, vessel, account] = await Promise.all([
+    getSeedUser("tech@pelagia.local"),
+    getSeedVessel("MV Poseidon"),
+    getSeedAccount("700201"),
+  ]);
+  techId = tech.id;
+  vesselId = vessel.id;
+  accountId = account.id;
+
+  const withEmail = await db.vendor.create({
+    data: { name: `${PREFIX}WithEmail`, contacts: { create: { name: "Vinod", email: "vinod@vendor.test", isPrimary: true } } },
+  });
+  vendorWithEmailId = withEmail.id;
+  const noEmail = await db.vendor.create({ data: { name: `${PREFIX}NoEmail` } });
+  vendorNoEmailId = noEmail.id;
+});
+
+afterEach(() => {
+  vi.mocked(isPdfServiceConfigured).mockReturnValue(true);
+  vi.clearAllMocks();
+});
+
+afterAll(async () => {
+  await db.purchaseOrder.deleteMany({ where: { title: { startsWith: PREFIX } } });
+  await db.vendorContact.deleteMany({ where: { vendor: { name: { startsWith: PREFIX } } } });
+  await db.vendor.deleteMany({ where: { name: { startsWith: PREFIX } } });
+});
+
+describe("prepareVendorEmail", () => {
+  it("builds a mailto draft to the vendor's primary contact with the PDF link", async () => {
+    as(techId, "TECHNICAL");
+    const poId = await makePo("MGR_APPROVED", vendorWithEmailId);
+
+    const result = await prepareVendorEmail(poId);
+    expect("ok" in result && result.ok).toBe(true);
+    if (!("ok" in result)) throw new Error(result.error);
+
+    expect(result.to).toBe("vinod@vendor.test");
+    expect(result.mailto.startsWith("mailto:vinod%40vendor.test?")).toBe(true);
+    // Subject is the PO number; body carries the (mocked) download link.
+    expect(decodeURIComponent(result.mailto)).toContain("Purchase Order");
+    expect(decodeURIComponent(result.mailto)).toContain("https://files.example/po.pdf?sig=abc");
+  });
+
+  it("is available once payment is recorded too (PARTIALLY_PAID)", async () => {
+    as(techId, "TECHNICAL");
+    const poId = await makePo("PARTIALLY_PAID", vendorWithEmailId);
+    expect("ok" in (await prepareVendorEmail(poId))).toBe(true);
+  });
+
+  it("refuses a PO that is not yet approved (DRAFT)", async () => {
+    as(techId, "TECHNICAL");
+    const poId = await makePo("DRAFT", vendorWithEmailId);
+    const result = await prepareVendorEmail(poId);
+    expect("error" in result).toBe(true);
+  });
+
+  it("errors when the vendor has no primary contact email", async () => {
+    as(techId, "TECHNICAL");
+    const poId = await makePo("MGR_APPROVED", vendorNoEmailId);
+    const result = await prepareVendorEmail(poId);
+    expect("error" in result).toBe(true);
+  });
+
+  it("errors when the PDF service is not configured", async () => {
+    vi.mocked(isPdfServiceConfigured).mockReturnValue(false);
+    as(techId, "TECHNICAL");
+    const poId = await makePo("MGR_APPROVED", vendorWithEmailId);
+    const result = await prepareVendorEmail(poId);
+    expect("error" in result).toBe(true);
+  });
+
+  it("rejects an unauthenticated caller", async () => {
+    vi.mocked(auth as unknown as () => Promise<unknown>).mockResolvedValue(null);
+    const poId = await makePo("MGR_APPROVED", vendorWithEmailId);
+    expect(await prepareVendorEmail(poId)).toEqual({ error: "Unauthorized" });
+  });
+});
diff --git a/PdfService/package-lock.json b/PdfService/package-lock.json
new file mode 100644
index 0000000..378e9d5
--- /dev/null
+++ b/PdfService/package-lock.json
@@ -0,0 +1,1535 @@
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+  "name": "pdf-service",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
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+    "": {
+      "name": "pdf-service",
+      "version": "1.0.0",
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+        "express": "^4.18.2",
+        "playwright": "^1.49.0"
+      },
+      "devDependencies": {
+        "@types/express": "^4.17.21",
+        "@types/node": "^22.0.0",
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+      }
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diff --git a/PdfService/package.json b/PdfService/package.json
new file mode 100644
index 0000000..5e0ec4c
--- /dev/null
+++ b/PdfService/package.json
@@ -0,0 +1,21 @@
+{
+  "name": "pdf-service",
+  "version": "1.0.0",
+  "description": "Renders a Pelagia PO export page to a real PDF via headless Chromium (Playwright). Mirrors GstService/EpfoService.",
+  "main": "dist/index.js",
+  "scripts": {
+    "dev": "tsx watch src/index.ts",
+    "build": "tsc",
+    "start": "node dist/index.js"
+  },
+  "dependencies": {
+    "express": "^4.18.2",
+    "playwright": "^1.49.0"
+  },
+  "devDependencies": {
+    "@types/express": "^4.17.21",
+    "@types/node": "^22.0.0",
+    "tsx": "^4.19.2",
+    "typescript": "^5.7.2"
+  }
+}
diff --git a/PdfService/src/index.ts b/PdfService/src/index.ts
new file mode 100644
index 0000000..b9495d4
--- /dev/null
+++ b/PdfService/src/index.ts
@@ -0,0 +1,81 @@
+/**
+ * PdfService — renders a Pelagia PO export page to a real PDF via headless
+ * Chromium (Playwright). Mirrors GstService/EpfoService: a tiny internal-only
+ * Express proxy the Next app calls.
+ *
+ *   POST /pdf  { url }  →  application/pdf
+ *
+ * The app builds the PO export URL (its own /api/po/:id/export?format=pdf&pdf=1
+ * carrying a short-lived service token) and posts it here; we navigate to it and
+ * return the printed PDF bytes. The app then stores the PDF (R2) and emails the
+ * vendor a download link (issue #14).
+ *
+ * Safety: this renders arbitrary URLs, so it is internal-only and guards against
+ * SSRF by (a) requiring a shared token when PDF_SERVICE_TOKEN is set and
+ * (b) only navigating to URLs whose origin matches ALLOWED_ORIGIN when set.
+ */
+import express from "express";
+import { chromium, type Browser } from "playwright";
+
+const PORT = Number(process.env.PORT ?? 3005);
+const NAV_TIMEOUT_MS = Number(process.env.NAV_TIMEOUT_MS ?? 30_000);
+const TOKEN = process.env.PDF_SERVICE_TOKEN ?? "";
+const ALLOWED_ORIGIN = process.env.ALLOWED_ORIGIN ?? ""; // e.g. http://localhost:3000
+
+function log(level: string, msg: string, ctx?: Record<string, unknown>) {
+  const line = JSON.stringify({ ts: new Date().toISOString(), level, msg, ...ctx });
+  (level === "ERROR" || level === "WARN" ? process.stderr : process.stdout).write(line + "\n");
+}
+
+// ── Browser (lazy singleton) ────────────────────────────────────────────────
+let _browser: Browser | null = null;
+async function getBrowser(): Promise<Browser> {
+  if (_browser?.isConnected()) return _browser;
+  _browser = await chromium.launch({ headless: true, args: ["--no-sandbox", "--disable-setuid-sandbox"] });
+  _browser.on("disconnected", () => { _browser = null; });
+  return _browser;
+}
+
+function originOf(url: string): string | null {
+  try { return new URL(url).origin; } catch { return null; }
+}
+
+const app = express();
+app.use(express.json({ limit: "1mb" }));
+
+app.get("/health", (_req, res) => {
+  res.json({ status: "ok", browser: _browser?.isConnected() ? "up" : "idle" });
+});
+
+app.post("/pdf", async (req, res) => {
+  const started = Date.now();
+  const { url } = (req.body ?? {}) as { url?: string };
+
+  if (TOKEN && req.header("x-pdf-token") !== TOKEN) {
+    return res.status(401).json({ error: "Unauthorized" });
+  }
+  const origin = url ? originOf(url) : null;
+  if (!url || !origin) return res.status(400).json({ error: "A valid url is required" });
+  if (ALLOWED_ORIGIN && origin !== ALLOWED_ORIGIN) {
+    return res.status(403).json({ error: "URL origin not allowed" });
+  }
+
+  let context;
+  try {
+    const browser = await getBrowser();
+    context = await browser.newContext();
+    const page = await context.newPage();
+    await page.goto(url, { waitUntil: "networkidle", timeout: NAV_TIMEOUT_MS });
+    const pdf = await page.pdf({ format: "A4", printBackground: true, preferCSSPageSize: true });
+    res.setHeader("Content-Type", "application/pdf");
+    res.send(pdf);
+    log("INFO", "Rendered PDF", { origin, ms: Date.now() - started, bytes: pdf.length });
+  } catch (e) {
+    log("ERROR", "POST /pdf failed", { err: String(e) });
+    res.status(502).json({ error: `PDF render failed: ${String(e)}` });
+  } finally {
+    await context?.close().catch(() => {});
+  }
+});
+
+app.listen(PORT, () => log("INFO", "PdfService listening", { port: PORT, allowedOrigin: ALLOWED_ORIGIN || "(any)" }));
diff --git a/PdfService/tsconfig.json b/PdfService/tsconfig.json
new file mode 100644
index 0000000..8e8f606
--- /dev/null
+++ b/PdfService/tsconfig.json
@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "CommonJS",
+    "moduleResolution": "node",
+    "outDir": "dist",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true
+  },
+  "include": ["src"]
+}