Keep a published rule when some invitation emails already went out, and only set Reply-To when the inviter address is a mailbox.

tests/unit/ruleStakeholderInviteResendExpiredRoute.test.ts

@@ -41,6 +41,7 @@ vi.mock("../../lib/server/rateLimit", () => ({
     rateLimitKeyMock(key, minIntervalMs),
 }));
 
+import { RULE_STAKEHOLDER_INVITER_FALLBACK } from "../../lib/server/ruleStakeholderInviteMail";
 import { POST } from "../../app/api/invites/rule-stakeholder/resend/route";
 
 beforeEach(() => {
@@ -109,4 +110,39 @@ describe("POST /api/invites/rule-stakeholder/resend", () => {
       }),
     );
   });
+
+  it("does not use a fake mailbox when the inviter and owner have no email", async () => {
+    findUniqueMock.mockResolvedValueOnce({
+      id: "st-1",
+      email: "inv@example.com",
+      inviteTokenHash: "hash-old",
+      inviteExpiresAt: new Date(Date.now() - 60_000),
+      invitedBy: null,
+      rule: {
+        title: "Juniper Street Food Share",
+        summary: null,
+        document: {},
+        user: { email: null },
+      },
+    });
+
+    const res = await POST(
+      new NextRequest("https://x.test/api/invites/rule-stakeholder/resend", {
+        method: "POST",
+        body: JSON.stringify({
+          token: "a".repeat(12),
+          email: "inv@example.com",
+        }),
+        headers: { "content-type": "application/json" },
+      }),
+      undefined,
+    );
+
+    expect(res.status).toBe(200);
+    expect(sendInviteMock).toHaveBeenCalledWith(
+      expect.objectContaining({
+        inviterEmail: RULE_STAKEHOLDER_INVITER_FALLBACK,
+      }),
+    );
+  });
 });