diff --git a/src/utils/logger.js b/src/utils/logger.js
index afdb545bae..76185be72b 100644
--- a/src/utils/logger.js
+++ b/src/utils/logger.js
@@ -8,7 +8,7 @@ import { ZalgoPromise } from '@krakenjs/zalgo-promise/src';
 import { getGlobalUrl } from './global';
 import { request } from './miscellaneous';
 
-import { getLibraryVersion, getDisableSetCookie } from './sdk';
+import { getLibraryVersion, getDisableSetCookie, getClientId } from './sdk';
 
 function generateLogPayload(account, { meta, events: bizEvents, tracking }) {
     const { deviceID, sessionID, integration_type, messaging_version } = meta.global ?? {};
@@ -173,6 +173,18 @@ export const logger = Logger({
             ? `${url}?disableSetCookie=true&features=disable-set-cookie`
             : url;
 
+        // Send authorization header with tracking event
+        if (__MESSAGES__.__TARGET__ === 'SDK') {
+            const encodedClientId = btoa(getClientId());
+            // eslint-disable-next-line no-param-reassign
+            headers.Authorization = `Basic ${encodedClientId}`;
+        }
+        if (__MESSAGES__.__TARGET__ === 'STANDALONE' || __MESSAGES__.__TARGET__ === 'STANDALONE_MODAL') {
+            const encodedPayerId = btoa(trimmedMeta['1'].account);
+            // eslint-disable-next-line no-param-reassign
+            headers.Authorization = `Basic ${encodedPayerId}`;
+        }
+
         return ZalgoPromise.all(
             translateLogData(trimmedLog).map(data => {
                 return request(method, urlWithCookieParams, {
diff --git a/src/utils/sdk.js b/src/utils/sdk.js
index 4f798167c3..0de2ca1796 100644
--- a/src/utils/sdk.js
+++ b/src/utils/sdk.js
@@ -71,6 +71,15 @@ export function getAccount() {
         return undefined;
     }
 }
+
+export function getClientId() {
+    if (__MESSAGES__.__TARGET__ === 'SDK') {
+        return getClientID();
+    } else {
+        return undefined;
+    }
+}
+
 export function getPageType() {
     if (__MESSAGES__.__TARGET__ === 'SDK') {
         return getSDKPageType();