diff --git a/packages/analytics-core/src/plugins/destination.ts b/packages/analytics-core/src/plugins/destination.ts
index 0710ba7c7..ab4be3a25 100644
--- a/packages/analytics-core/src/plugins/destination.ts
+++ b/packages/analytics-core/src/plugins/destination.ts
@@ -135,6 +135,7 @@ export class Destination implements DestinationPlugin {
 
   async send(list: Context[], useRetry = true) {
     if (!this.config.apiKey) {
+      (this.config.diagnosticProvider as Diagnostic).track(list.length, 400, 'missing API key');
       return this.fulfillRequest(list, 400, MISSING_API_KEY_MESSAGE);
     }
 
@@ -154,6 +155,7 @@ export class Destination implements DestinationPlugin {
       const { serverUrl } = createServerConfig(this.config.serverUrl, this.config.serverZone, this.config.useBatch);
       const res = await this.config.transportProvider.send(serverUrl, payload);
       if (res === null) {
+        (this.config.diagnosticProvider as Diagnostic).track(list.length, 0, 'unexpected error');
         this.fulfillRequest(list, 0, UNEXPECTED_ERROR_MESSAGE);
         (this.config.diagnosticProvider as Diagnostic).track(list.length, 0, 'unexpected error');
         return;