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

app/api/invites/rule-stakeholder/resend/route.ts

@@ -9,6 +9,7 @@ import { sendRuleStakeholderInviteEmail } from "../../../../../lib/server/mail";
 import { apiRoute } from "../../../../../lib/server/apiRoute";
 import { logRouteError } from "../../../../../lib/server/requestId";
 import { stakeholderInviteVerifyUrl } from "../../../../../lib/server/ruleStakeholderInviteOps";
+import { RULE_STAKEHOLDER_INVITER_FALLBACK } from "../../../../../lib/server/ruleStakeholderInviteMail";
 import { STAKEHOLDER_INVITE_TTL_MS } from "../../../../../lib/server/ruleStakeholders";
 import {
   dbUnavailable,
@@ -102,7 +103,9 @@ export const POST = apiRoute(
     const origin = getPublicOrigin(request);
     const verifyUrl = stakeholderInviteVerifyUrl(origin, nextToken);
     const inviterEmail =
-      row.invitedBy?.email ?? row.rule.user?.email ?? "CommunityRule";
+      row.invitedBy?.email ??
+      row.rule.user?.email ??
+      RULE_STAKEHOLDER_INVITER_FALLBACK;
     try {
       await sendRuleStakeholderInviteEmail({
         to: row.email,