diff --git a/ghost/core/core/server/services/email-analytics/lib/queries.js b/ghost/core/core/server/services/email-analytics/lib/queries.js
index 1504e4b1220e..fbe2019fdc3a 100644
--- a/ghost/core/core/server/services/email-analytics/lib/queries.js
+++ b/ghost/core/core/server/services/email-analytics/lib/queries.js
@@ -41,10 +41,16 @@ module.exports = {
     },
 
     async aggregateEmailStats(emailId) {
+        const {totalCount} = await db.knex('emails').select(db.knex.raw('email_count as totalCount')).where('id', emailId).first() || {totalCount: 0};
+        // use IS NULL here because that will typically match far fewer rows than IS NOT NULL making the query faster
+        const [undeliveredCount] = await db.knex('email_recipients').count('id as count').whereRaw('email_id = ? AND delivered_at IS NULL', [emailId]);
+        const [openedCount] = await db.knex('email_recipients').count('id as count').whereRaw('email_id = ? AND opened_at IS NOT NULL', [emailId]);
+        const [failedCount] = await db.knex('email_recipients').count('id as count').whereRaw('email_id = ? AND failed_at IS NOT NULL', [emailId]);
+
         await db.knex('emails').update({
-            delivered_count: db.knex.raw(`(SELECT COUNT(id) FROM email_recipients WHERE email_id = ? AND delivered_at IS NOT NULL)`, [emailId]),
-            opened_count: db.knex.raw(`(SELECT COUNT(id) FROM email_recipients WHERE email_id = ? AND opened_at IS NOT NULL)`, [emailId]),
-            failed_count: db.knex.raw(`(SELECT COUNT(id) FROM email_recipients WHERE email_id = ? AND failed_at IS NOT NULL)`, [emailId])
+            delivered_count: totalCount - undeliveredCount.count,
+            opened_count: openedCount.count,
+            failed_count: failedCount.count
         }).where('id', emailId);
     },
 
@@ -56,15 +62,16 @@ module.exports = {
             .where('emails.track_opens', true)
             .first() || {};
 
+        const [emailCount] = await db.knex('email_recipients').count('id as count').whereRaw('member_id = ?', [memberId]);
+        const [emailOpenedCount] = await db.knex('email_recipients').count('id as count').whereRaw('member_id = ? AND opened_at IS NOT NULL', [memberId]);
+
         const updateQuery = {
-            email_count: db.knex.raw('(SELECT COUNT(id) FROM email_recipients WHERE member_id = ?)', [memberId]),
-            email_opened_count: db.knex.raw('(SELECT COUNT(id) FROM email_recipients WHERE member_id = ? AND opened_at IS NOT NULL)', [memberId])
+            email_count: emailCount.count,
+            email_opened_count: emailOpenedCount.count
         };
 
         if (trackedEmailCount >= MIN_EMAIL_COUNT_FOR_OPEN_RATE) {
-            updateQuery.email_open_rate = db.knex.raw(`
-                ROUND(((SELECT COUNT(id) FROM email_recipients WHERE member_id = ? AND opened_at IS NOT NULL) * 1.0 / ? * 100), 0)
-            `, [memberId, trackedEmailCount]);
+            updateQuery.email_open_rate = Math.round(emailOpenedCount.count / trackedEmailCount * 100);
         }
 
         await db.knex('members')
diff --git a/ghost/core/test/e2e-api/admin/__snapshots__/emails.test.js.snap b/ghost/core/test/e2e-api/admin/__snapshots__/emails.test.js.snap
index 37f8f6f0aabd..c6f86209e5ad 100644
--- a/ghost/core/test/e2e-api/admin/__snapshots__/emails.test.js.snap
+++ b/ghost/core/test/e2e-api/admin/__snapshots__/emails.test.js.snap
@@ -491,7 +491,7 @@ Object {
     Object {
       "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
       "delivered_count": 1,
-      "email_count": 2,
+      "email_count": 6,
       "error": null,
       "error_data": null,
       "failed_count": 1,
@@ -517,7 +517,7 @@ Object {
     },
     Object {
       "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-      "delivered_count": 0,
+      "delivered_count": 3,
       "email_count": 3,
       "error": "Everything went south",
       "error_data": null,
@@ -690,7 +690,7 @@ Object {
     Object {
       "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
       "delivered_count": 1,
-      "email_count": 2,
+      "email_count": 6,
       "error": null,
       "error_data": null,
       "failed_count": 1,
@@ -736,7 +736,7 @@ Object {
   "emails": Array [
     Object {
       "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-      "delivered_count": 0,
+      "delivered_count": 3,
       "email_count": 3,
       "error": "Everything went south",
       "error_data": null,
diff --git a/ghost/core/test/utils/fixtures/data-generator.js b/ghost/core/test/utils/fixtures/data-generator.js
index d671503b014b..be1a079d808d 100644
--- a/ghost/core/test/utils/fixtures/data-generator.js
+++ b/ghost/core/test/utils/fixtures/data-generator.js
@@ -731,7 +731,7 @@ DataGenerator.Content = {
             id: ObjectId().toHexString(),
             uuid: '6b6afda6-4b5e-4893-bff6-f16859e8349a',
             status: 'submitted',
-            email_count: 2,
+            email_count: 6, // match the number of email_recipients relations below
             recipient_filter: 'all',
             subject: 'You got mailed!',
             html: '<p>Look! I\'m an email</p>',
@@ -745,7 +745,7 @@ DataGenerator.Content = {
             uuid: '365daa11-4bf0-4614-ad43-6346387ffa00',
             status: 'failed',
             error: 'Everything went south',
-            email_count: 3,
+            email_count: 3, // doesn't match the number of email_recipients relations below, some calculations may be off
             subject: 'You got mailed! Again!',
             html: '<p>What\'s that? Another email!</p>',
             plaintext: 'yes this is an email',