diff --git a/ghost/email-service/lib/email-event-storage.js b/ghost/email-service/lib/email-event-storage.js
index da4d27d005..9ea850b547 100644
--- a/ghost/email-service/lib/email-event-storage.js
+++ b/ghost/email-service/lib/email-event-storage.js
@@ -165,11 +165,17 @@ class EmailEventStorage {
     }
 
     async handleComplained(event) {
-        await this.#models.EmailSpamComplaintEvent.add({
-            member_id: event.memberId,
-            email_id: event.emailId,
-            email_address: event.email
-        });
+        try {
+            await this.#models.EmailSpamComplaintEvent.add({
+                member_id: event.memberId,
+                email_id: event.emailId,
+                email_address: event.email
+            });
+        } catch (err) {
+            if (err.code !== 'ER_DUP_ENTRY' && err.code !== 'SQLITE_CONSTRAINT') {
+                logging.error(err);
+            }
+        }
     }
 
     async unsubscribeFromNewsletters(event) {