diff --git a/src/outreach/campaign-metrics.mjs b/src/outreach/campaign-metrics.mjs
index 567472a..f6dc23d 100644
--- a/src/outreach/campaign-metrics.mjs
+++ b/src/outreach/campaign-metrics.mjs
@@ -200,10 +200,16 @@ export function evaluateCampaignHealth(db, campaignId, now = new Date()) {
 
   const todayKey = dateKey(now);
 
+  // Junta pelo vinculo real da fila (outreach_send_id), nao por
+  // lead_id+campaign_id: o catalogo de campanhas de hoje usa segmentos
+  // mutuamente exclusivos, entao um lead nunca esta em duas campanhas ao
+  // mesmo tempo — mas se isso mudar, lead_id+campaign_id contaria um envio
+  // automatico de OUTRA campanha (mesmo lead, historico anterior) nas
+  // metricas desta.
   const attemptsToday = Number(db.prepare(
     `SELECT COUNT(DISTINCT s.id) AS total
        FROM outreach_sends s
-       JOIN outreach_campaign_queue q ON q.lead_id = s.lead_id AND q.campaign_id = ?
+       JOIN outreach_campaign_queue q ON q.outreach_send_id = s.id AND q.campaign_id = ?
       WHERE s.origem = 'automatico'
         AND s.status IN ('aceito', 'erro')
         AND date(s.sent_at, 'localtime') = ?`
@@ -213,7 +219,7 @@ export function evaluateCampaignHealth(db, campaignId, now = new Date()) {
     const failureCount = Number(db.prepare(
       `SELECT COUNT(DISTINCT s.id) AS total
          FROM outreach_sends s
-         JOIN outreach_campaign_queue q ON q.lead_id = s.lead_id AND q.campaign_id = ?
+         JOIN outreach_campaign_queue q ON q.outreach_send_id = s.id AND q.campaign_id = ?
         WHERE s.origem = 'automatico'
           AND s.status = 'erro'
           AND date(s.sent_at, 'localtime') = ?`
diff --git a/tests/campaign-metrics.test.mjs b/tests/campaign-metrics.test.mjs
index aca1d89..5111ae5 100644
--- a/tests/campaign-metrics.test.mjs
+++ b/tests/campaign-metrics.test.mjs
@@ -289,16 +289,17 @@ test('evaluateCampaignHealth pausa por high_failure_rate quando > 10%', async ()
   const now = new Date('2026-07-29T12:00:00.000Z');
   db.prepare("UPDATE outreach_campaigns SET status = 'running' WHERE id = ?").run(campaign.id);
   const leads = [];
+  const queueIds = [];
   for (let i = 0; i < 11; i++) {
     const lid = addLead(db, 100 + i);
     leads.push(lid);
-    addQueue(db, campaign, { leadId: lid, status: 'sent', suffix: 100 + i });
+    queueIds.push(addQueue(db, campaign, { leadId: lid, status: 'sent', suffix: 100 + i }));
   }
   for (let i = 0; i < 8; i++) {
-    addSend(db, { leadId: leads[i], status: 'aceito', sentAt: '2026-07-29T12:00:00.000Z' });
+    addSend(db, { leadId: leads[i], status: 'aceito', sentAt: '2026-07-29T12:00:00.000Z', queueId: queueIds[i] });
   }
   for (let i = 8; i < 10; i++) {
-    addSend(db, { leadId: leads[i], status: 'erro', sentAt: '2026-07-29T12:00:00.000Z' });
+    addSend(db, { leadId: leads[i], status: 'erro', sentAt: '2026-07-29T12:00:00.000Z', queueId: queueIds[i] });
   }
 
   const result = evaluateCampaignHealth(db, campaign.id, now);
@@ -313,15 +314,16 @@ test('evaluateCampaignHealth NAO pausa por failure rate exatamente 10%', async (
   const now = new Date('2026-07-29T12:00:00.000Z');
   db.prepare("UPDATE outreach_campaigns SET status = 'running' WHERE id = ?").run(campaign.id);
   const leads = [];
+  const queueIds = [];
   for (let i = 0; i < 10; i++) {
     const lid = addLead(db, 200 + i);
     leads.push(lid);
-    addQueue(db, campaign, { leadId: lid, status: 'sent', suffix: 200 + i });
+    queueIds.push(addQueue(db, campaign, { leadId: lid, status: 'sent', suffix: 200 + i }));
   }
   for (let i = 0; i < 9; i++) {
-    addSend(db, { leadId: leads[i], status: 'aceito', sentAt: '2026-07-29T12:00:00.000Z' });
+    addSend(db, { leadId: leads[i], status: 'aceito', sentAt: '2026-07-29T12:00:00.000Z', queueId: queueIds[i] });
   }
-  addSend(db, { leadId: leads[9], status: 'erro', sentAt: '2026-07-29T12:00:00.000Z' }); // 1/10 = 10% → not > 10%
+  addSend(db, { leadId: leads[9], status: 'erro', sentAt: '2026-07-29T12:00:00.000Z', queueId: queueIds[9] }); // 1/10 = 10% → not > 10%
 
   const result = evaluateCampaignHealth(db, campaign.id, now);
   assert.equal(result.pause, false);
@@ -537,6 +539,44 @@ test('F1: campaignMetrics sends nao contaminam entre campanhas (usa outreach_sen
   db.close();
 });
 
+// Mesmo bug do F1, so que em evaluateCampaignHealth (que tem suas proprias
+// consultas de attemptsToday/failureCount, separadas de campaignMetrics):
+// antes, o join usava lead_id+campaign_id, entao um envio automatico com
+// erro em OUTRA campanha (mesmo lead) podia contar como falha desta
+// campanha e dispara-la a pausar por high_failure_rate indevidamente.
+test('F1b: evaluateCampaignHealth nao conta falha de envio de outra campanha (mesmo lead)', async () => {
+  const { evaluateCampaignHealth } = await metricsModule();
+  const { db, campaign } = setup();
+  const now = new Date('2026-07-29T12:00:00.000Z');
+  db.prepare("UPDATE outreach_campaigns SET status = 'running' WHERE id = ?").run(campaign.id);
+
+  const campaign2 = db.prepare('SELECT * FROM outreach_campaigns ORDER BY id LIMIT 1 OFFSET 1').get();
+  db.prepare("UPDATE outreach_campaigns SET status = 'running' WHERE id = ?").run(campaign2.id);
+
+  const leads = [];
+  const queueIds = [];
+  for (let i = 0; i < 10; i++) {
+    const lid = addLead(db, 8100 + i);
+    leads.push(lid);
+    queueIds.push(addQueue(db, campaign, { leadId: lid, status: 'sent', suffix: 8100 + i }));
+  }
+  for (let i = 0; i < 10; i++) {
+    addSend(db, { leadId: leads[i], status: 'aceito', sentAt: '2026-07-29T12:00:00.000Z', queueId: queueIds[i] });
+  }
+
+  // Mesmos leads, agora com uma fila (e envio com erro) numa SEGUNDA campanha.
+  // Sem o vinculo por outreach_send_id, essas falhas contaminariam a campanha 1.
+  for (let i = 0; i < 5; i++) {
+    const qid2 = addQueue(db, campaign2, { leadId: leads[i], status: 'sent', suffix: 8200 + i });
+    addSend(db, { leadId: leads[i], status: 'erro', sentAt: '2026-07-29T12:00:00.000Z', queueId: qid2 });
+  }
+
+  const result = evaluateCampaignHealth(db, campaign.id, now);
+  assert.equal(result.pause, false, JSON.stringify(result));
+  assert.equal(result.reason, null);
+  db.close();
+});
+
 // --- F2 regression: negative/opt-out count uses COUNT(DISTINCT) ---
 
 test('F2: evaluateCampaignHealth negative count usa COUNT(DISTINCT) para evitar cartesian', async () => {