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/rules/route.ts

@@ -205,9 +205,10 @@ export const POST = apiRoute(
     });
 
     const origin = getPublicOrigin(request);
-    try {
-      for (const inv of invites) {
-        const verifyUrl = stakeholderInviteVerifyUrl(origin, inv.token);
+    let sent = 0;
+    for (const inv of invites) {
+      const verifyUrl = stakeholderInviteVerifyUrl(origin, inv.token);
+      try {
         await sendRuleStakeholderInviteEmail({
           to: inv.email,
           verifyUrl,
@@ -217,11 +218,15 @@ export const POST = apiRoute(
           summary,
           document,
         });
+        sent += 1;
+      } catch (err) {
+        logRouteError("rules.publish", requestId, err, {
+          phase: "sendRuleStakeholderInviteEmail",
+          email: inv.email,
+        });
       }
-    } catch (err) {
-      logRouteError("rules.publish", requestId, err, {
-        phase: "sendRuleStakeholderInviteEmail",
-      });
+    }
+    if (sent === 0) {
       try {
         await prisma.publishedRule.delete({ where: { id: rule.id } });
       } catch (delErr) {