diff --git a/src/app/admin/carbets/[id]/_components/CarbetMemberships.tsx b/src/app/admin/carbets/[id]/_components/CarbetMemberships.tsx
new file mode 100644
index 0000000..95bfc88
--- /dev/null
+++ b/src/app/admin/carbets/[id]/_components/CarbetMemberships.tsx
@@ -0,0 +1,125 @@
+"use client";
+
+import { useState, useTransition } from "react";
+
+type Org = { id: string; name: string; slug: string; approved: boolean };
+type LinkedOrg = Org & { addedAt: Date };
+
+type Props = {
+  carbetId: string;
+  linked: LinkedOrg[];
+  available: Org[];
+  linkAction: (carbetId: string, orgId: string) => Promise<{ ok: true; alreadyLinked: boolean } | { ok: false; error?: string }>;
+  unlinkAction: (carbetId: string, orgId: string) => Promise<{ ok: true } | { ok: false; error?: string }>;
+};
+
+export function CarbetMemberships({
+  carbetId,
+  linked,
+  available,
+  linkAction,
+  unlinkAction,
+}: Props) {
+  const [pending, startTransition] = useTransition();
+  const [selectedOrgId, setSelectedOrgId] = useState("");
+  const [error, setError] = useState<string | null>(null);
+
+  // Filtre les orgs non encore liées
+  const linkedIds = new Set(linked.map((l) => l.id));
+  const options = available.filter((o) => !linkedIds.has(o.id));
+
+  function link() {
+    if (!selectedOrgId) return;
+    setError(null);
+    startTransition(async () => {
+      const res = await linkAction(carbetId, selectedOrgId);
+      if (!res.ok) setError(res.error || "Échec de la liaison");
+      else setSelectedOrgId("");
+    });
+  }
+
+  function unlink(orgId: string) {
+    setError(null);
+    startTransition(async () => {
+      const res = await unlinkAction(carbetId, orgId);
+      if (!res.ok) setError(res.error || "Échec");
+    });
+  }
+
+  return (
+    <div className="space-y-3">
+      {linked.length === 0 ? (
+        <p className="text-sm text-zinc-500">
+          Aucune organisation liée. Le carbet est géré uniquement par son propriétaire individuel.
+        </p>
+      ) : (
+        <ul className="divide-y divide-zinc-100 rounded-md border border-zinc-200 bg-white">
+          {linked.map((o) => (
+            <li
+              key={o.id}
+              className="flex items-center justify-between gap-3 px-3 py-2 text-sm"
+            >
+              <div>
+                <span className="font-medium text-zinc-900">{o.name}</span>
+                <span className="ml-2 text-[11px] text-zinc-500">/{o.slug}</span>
+                {!o.approved ? (
+                  <span className="ml-2 rounded-full bg-amber-100 px-1.5 py-0.5 text-[9px] font-semibold uppercase tracking-wider text-amber-800 ring-1 ring-inset ring-amber-300">
+                    Pending
+                  </span>
+                ) : null}
+              </div>
+              <button
+                type="button"
+                disabled={pending}
+                onClick={() => unlink(o.id)}
+                className="rounded border border-rose-200 bg-white px-2 py-1 text-[11px] text-rose-700 hover:bg-rose-50 disabled:opacity-60"
+              >
+                Délier
+              </button>
+            </li>
+          ))}
+        </ul>
+      )}
+
+      {options.length > 0 ? (
+        <div className="flex flex-wrap items-center gap-2">
+          <select
+            value={selectedOrgId}
+            onChange={(e) => setSelectedOrgId(e.target.value)}
+            className="rounded-md border border-zinc-300 bg-white px-2 py-1.5 text-sm focus:border-zinc-900 focus:outline-none"
+          >
+            <option value="">— Choisir une organisation à lier —</option>
+            {options.map((o) => (
+              <option key={o.id} value={o.id}>
+                {o.name} {o.approved ? "" : "(pending)"}
+              </option>
+            ))}
+          </select>
+          <button
+            type="button"
+            disabled={pending || !selectedOrgId}
+            onClick={link}
+            className="rounded-md bg-emerald-600 px-3 py-1.5 text-sm font-semibold text-white hover:bg-emerald-700 disabled:opacity-50"
+          >
+            {pending ? "…" : "Lier"}
+          </button>
+        </div>
+      ) : (
+        <p className="text-[11px] text-zinc-500">
+          Toutes les organisations existantes sont déjà liées à ce carbet.
+        </p>
+      )}
+
+      {error ? (
+        <div className="rounded border border-rose-200 bg-rose-50 px-3 py-2 text-xs text-rose-700">
+          {error}
+        </div>
+      ) : null}
+
+      <p className="text-[11px] text-zinc-500">
+        Une organisation liée signifie que ses CE_MANAGERs peuvent éditer ce carbet en plus du
+        propriétaire nominal.
+      </p>
+    </div>
+  );
+}
diff --git a/src/app/admin/carbets/[id]/page.tsx b/src/app/admin/carbets/[id]/page.tsx
index bf7a972..6a69e2e 100644
--- a/src/app/admin/carbets/[id]/page.tsx
+++ b/src/app/admin/carbets/[id]/page.tsx
@@ -1,15 +1,23 @@
 import { notFound } from "next/navigation";
 import Link from "next/link";
+
+import { MediaUploader } from "@/components/MediaUploader";
+import { StatusBadge } from "@/components/admin/StatusBadge";
 import {
   getCarbetForEdit,
+  listOrganizationsForLink,
   listOwners,
   listPirogueProviders,
 } from "@/lib/admin/carbets";
+
 import { CarbetForm } from "../_components/CarbetForm";
-import { StatusBadge } from "@/components/admin/StatusBadge";
-import { MediaUploader } from "@/components/MediaUploader";
+import {
+  linkCarbetToOrganizationAction,
+  unlinkCarbetFromOrganizationAction,
+  updateCarbetAction,
+} from "../actions";
+import { CarbetMemberships } from "./_components/CarbetMemberships";
 import { StatusActions } from "./_components/StatusActions";
-import { updateCarbetAction } from "../actions";
 
 export const dynamic = "force-dynamic";
 
@@ -17,10 +25,11 @@ type PageProps = { params: Promise<{ id: string }> };
 
 export default async function EditCarbetPage({ params }: PageProps) {
   const { id } = await params;
-  const [carbet, owners, providers] = await Promise.all([
+  const [carbet, owners, providers, organizations] = await Promise.all([
     getCarbetForEdit(id),
     listOwners(),
     listPirogueProviders(),
+    listOrganizationsForLink(),
   ]);
   if (!carbet) notFound();
 
@@ -28,6 +37,14 @@ export default async function EditCarbetPage({ params }: PageProps) {
     "use server";
     return await updateCarbetAction(id, fd);
   };
+  const linkThis = async (carbetId: string, orgId: string) => {
+    "use server";
+    return await linkCarbetToOrganizationAction(carbetId, orgId);
+  };
+  const unlinkThis = async (carbetId: string, orgId: string) => {
+    "use server";
+    return await unlinkCarbetFromOrganizationAction(carbetId, orgId);
+  };
 
   return (
     <div className="mx-auto max-w-5xl space-y-6">
@@ -61,6 +78,25 @@ export default async function EditCarbetPage({ params }: PageProps) {
         </div>
       </header>
 
+      <section className="mb-6 rounded-lg border border-zinc-200 bg-white p-5 shadow-sm">
+        <h2 className="mb-3 text-sm font-semibold uppercase tracking-wider text-zinc-500">
+          Organisations co-gestionnaires (CE)
+        </h2>
+        <CarbetMemberships
+          carbetId={carbet.id}
+          linked={carbet.organizations.map((m) => ({
+            id: m.organization.id,
+            name: m.organization.name,
+            slug: m.organization.slug,
+            approved: m.organization.approved,
+            addedAt: m.addedAt,
+          }))}
+          available={organizations}
+          linkAction={linkThis}
+          unlinkAction={unlinkThis}
+        />
+      </section>
+
       <section className="mb-6 rounded-lg border border-zinc-200 bg-white p-5 shadow-sm">
         <h2 className="mb-3 text-sm font-semibold uppercase tracking-wider text-zinc-500">
           Médias
diff --git a/src/app/admin/carbets/actions.ts b/src/app/admin/carbets/actions.ts
index 2004bd8..f85950a 100644
--- a/src/app/admin/carbets/actions.ts
+++ b/src/app/admin/carbets/actions.ts
@@ -213,6 +213,42 @@ export async function reorderMediaAction(carbetId: string, mediaId: string, dire
   return { ok: true as const };
 }
 
+export async function linkCarbetToOrganizationAction(carbetId: string, organizationId: string) {
+  await requireRole([UserRole.ADMIN]);
+  const session = await auth();
+  const actorEmail = session?.user?.email ?? null;
+  // findFirst pour idempotence : si déjà lié, on ne touche pas + on ne crash pas.
+  const existing = await prisma.organizationCarbetMembership.findUnique({
+    where: { organizationId_carbetId: { organizationId, carbetId } },
+    select: { organizationId: true },
+  });
+  if (existing) {
+    return { ok: true as const, alreadyLinked: true };
+  }
+  await prisma.organizationCarbetMembership.create({
+    data: {
+      organizationId,
+      carbetId,
+      addedByUserId: session?.user?.id ?? null,
+    },
+  });
+  await audit("carbet.org.link", carbetId, actorEmail, { organizationId });
+  revalidatePath(`/admin/carbets/${carbetId}`);
+  return { ok: true as const, alreadyLinked: false };
+}
+
+export async function unlinkCarbetFromOrganizationAction(carbetId: string, organizationId: string) {
+  await requireRole([UserRole.ADMIN]);
+  const session = await auth();
+  const actorEmail = session?.user?.email ?? null;
+  await prisma.organizationCarbetMembership
+    .delete({ where: { organizationId_carbetId: { organizationId, carbetId } } })
+    .catch(() => {});
+  await audit("carbet.org.unlink", carbetId, actorEmail, { organizationId });
+  revalidatePath(`/admin/carbets/${carbetId}`);
+  return { ok: true as const };
+}
+
 async function audit(
   event: string,
   entityId: string,
diff --git a/src/app/espace-ce/membres/_components/InviteForm.tsx b/src/app/espace-ce/membres/_components/InviteForm.tsx
index 8fb63e3..4a8fd96 100644
--- a/src/app/espace-ce/membres/_components/InviteForm.tsx
+++ b/src/app/espace-ce/membres/_components/InviteForm.tsx
@@ -14,10 +14,13 @@ export function InviteForm({
   const [pending, startTransition] = useTransition();
   const [error, setError] = useState<string | null>(null);
   const [link, setLink] = useState<string | null>(null);
+  const [emailSent, setEmailSent] = useState(false);
 
   function onSubmit(fd: FormData) {
     setError(null);
     setLink(null);
+    setEmailSent(false);
+    const emailValue = ((fd.get("email") as string | null) ?? "").trim();
     startTransition(async () => {
       const res = await action(fd);
       if (!res.ok) {
@@ -25,6 +28,7 @@ export function InviteForm({
         return;
       }
       setLink(`${siteUrl}/inscription?invite=${res.token}`);
+      setEmailSent(Boolean(emailValue));
     });
   }
 
@@ -58,6 +62,7 @@ export function InviteForm({
         <div className="rounded-md border border-emerald-200 bg-emerald-50/60 p-3 text-sm">
           <p className="text-xs font-semibold uppercase tracking-wider text-emerald-800">
             ✓ Lien d&apos;invitation généré (valable 14 jours)
+            {emailSent ? " · email envoyé" : ""}
           </p>
           <code className="mt-1 block break-all rounded bg-white px-2 py-1.5 font-mono text-xs text-zinc-700">
             {link}
@@ -76,8 +81,9 @@ export function InviteForm({
         </div>
       ) : null}
       <p className="text-[11px] text-zinc-500">
-        Si vous indiquez un email, le lien sera bloqué pour tout autre adresse à la connexion.
-        Sinon, n&apos;importe qui ayant le lien peut rejoindre votre CE.
+        Si vous indiquez un email, l&apos;invitation sera envoyée automatiquement et le lien
+        sera bloqué pour toute autre adresse à la connexion. Sans email, n&apos;importe qui
+        ayant le lien peut rejoindre votre CE.
       </p>
     </div>
   );
diff --git a/src/app/espace-ce/membres/actions.ts b/src/app/espace-ce/membres/actions.ts
index e1e6fa3..b042c00 100644
--- a/src/app/espace-ce/membres/actions.ts
+++ b/src/app/espace-ce/membres/actions.ts
@@ -10,8 +10,11 @@ import {
   revokeOrgInviteToken,
 } from "@/lib/ce-invites";
 import { getCurrentCeOrganization } from "@/lib/ce-access";
+import { sendCeInviteEmail } from "@/lib/email";
 import { prisma } from "@/lib/prisma";
 
+const SITE_URL = process.env.NEXT_PUBLIC_SITE_URL ?? "https://karbe.cosmolan.fr";
+
 export type CreateInviteResult =
   | { ok: true; token: string }
   | { ok: false; error: string };
@@ -41,8 +44,17 @@ export async function createInviteAction(fd: FormData): Promise<CreateInviteResu
     event: "invite.create",
     target: org.id,
     actorEmail: session.user.email ?? null,
-    details: { email },
+    details: { email, emailedAutomatically: Boolean(email) },
   });
+  // Envoi automatique si email destinataire fourni (best-effort, dry-run sans Resend).
+  if (email) {
+    const inviteUrl = `${SITE_URL}/inscription?invite=${token}`;
+    try {
+      await sendCeInviteEmail(email, org.name, inviteUrl, session.user.name);
+    } catch (e) {
+      console.error("[ce.invite] email send failed:", e instanceof Error ? e.message : e);
+    }
+  }
   revalidatePath("/espace-ce/membres");
   return { ok: true, token };
 }
diff --git a/src/lib/admin/carbets.ts b/src/lib/admin/carbets.ts
index bf773e2..d9e7d36 100644
--- a/src/lib/admin/carbets.ts
+++ b/src/lib/admin/carbets.ts
@@ -111,10 +111,24 @@ export async function getCarbetForEdit(id: string) {
       owner: { select: { id: true, firstName: true, lastName: true, email: true } },
       pirogueProvider: { select: { id: true, name: true } },
       media: { orderBy: { sortOrder: "asc" } },
+      organizations: {
+        orderBy: { addedAt: "asc" },
+        include: {
+          organization: { select: { id: true, name: true, slug: true, approved: true } },
+        },
+      },
       _count: { select: { bookings: true, reviews: true } },
     },
   });
 }
 
+/** Liste les orgs disponibles pour link sur un carbet — toutes orgs (approuvées et pending). */
+export async function listOrganizationsForLink() {
+  return prisma.organization.findMany({
+    orderBy: [{ approved: "desc" }, { name: "asc" }],
+    select: { id: true, name: true, slug: true, approved: true },
+  });
+}
+
 // Options enum déplacées dans `./carbet-options.ts` pour être importables
 // depuis les composants client (ce fichier-ci est server-only).
diff --git a/src/lib/email.ts b/src/lib/email.ts
index 070370f..4305922 100644
--- a/src/lib/email.ts
+++ b/src/lib/email.ts
@@ -207,6 +207,30 @@ export async function sendNewCeRequest(
   });
 }
 
+export async function sendCeInviteEmail(
+  to: string,
+  orgName: string,
+  inviteUrl: string,
+  inviterName?: string | null,
+): Promise<void> {
+  const intro = inviterName
+    ? `<strong>${inviterName}</strong> vous invite à rejoindre`
+    : "Vous êtes invité à rejoindre";
+  await sendEmail({
+    to,
+    subject: `Invitation à rejoindre « ${orgName} » sur Karbé`,
+    html: wrap(
+      `Invitation Karbé — ${orgName}`,
+      `<p>${intro} le Comité d'Entreprise <strong>${orgName}</strong> sur Karbé.</p>
+       <p>Cliquez sur le bouton ci-dessous pour créer votre compte CE_MEMBER et accéder aux carbets et matériel de votre CE :</p>
+       <p><a href="${inviteUrl}" style="display:inline-block;background:#16a34a;color:white;padding:10px 20px;border-radius:6px;text-decoration:none;font-weight:600;">Rejoindre ${orgName}</a></p>
+       <p style="font-size:12px;color:#71717a;">Lien valable 14 jours. Si vous n'êtes pas le destinataire attendu, ignorez cet email.</p>
+       <p style="font-size:11px;color:#a1a1aa;word-break:break-all;">Lien direct : ${inviteUrl}</p>`,
+    ),
+    text: `${intro.replace(/<[^>]+>/g, "")} le CE ${orgName} sur Karbé : ${inviteUrl}`,
+  });
+}
+
 export async function sendCeApproved(
   to: string,
   firstName: string,