diff --git a/src/sendLogs.js b/src/sendLogs.js
index 5985644d..860d0ca0 100644
--- a/src/sendLogs.js
+++ b/src/sendLogs.js
@@ -61,13 +61,25 @@ export function sendOnInterval(logs, config) {
  */
 export function sendOnClose(logs, config) {
   window.addEventListener("pagehide", function () {
-    if (config.on && logs.length > 0) {
-      // NOTE: sendBeacon does not support auth headers,
-      // so this will fail if auth is required.
-      // The alternative is to use fetch() with keepalive: true
-      // https://developer.mozilla.org/en-US/docs/Web/API/Navigator/sendBeacon#description
-      // https://stackoverflow.com/a/73062712/9263449
-      navigator.sendBeacon(config.url, JSON.stringify(logs));
+    if (!config.on) {
+      return;
+    }
+
+    if (logs.length > 0) {
+
+      let header_options = config.authHeader ? 
+        {'Content-Type': 'application/json;charset=UTF-8', 'Authorization': config.authHeader} 
+        : {'content-type': 'application/json;charset=UTF-8'};
+
+      fetch(config.url, {
+        keepalive: true,
+        method: 'POST',
+        headers: header_options,
+        body: JSON.stringify(logs),
+      }).catch((error) => {
+        console.error(error);
+      })
+      
       logs.splice(0); // clear log queue
     }
   });
diff --git a/test/sendLogs_spec.js b/test/sendLogs_spec.js
index 7b508029..436cba7d 100644
--- a/test/sendLogs_spec.js
+++ b/test/sendLogs_spec.js
@@ -94,25 +94,24 @@ describe('sendLogs', () => {
         done();
     });
 
-    it('sends logs on page exit with navigator', () => {
-        const sendBeaconSpy = sinon.spy()
-        global.navigator = {
-            sendBeacon: sendBeaconSpy
-        };
+    it('sends logs on page exit with fetch', () => {
+        const fetchSpy = sinon.spy()
+        global.fetch = fetchSpy
+
         sendOnClose([], {on: true, url: 'test'})
         sendOnClose([{foo: 'bar'}], {on: true, url: 'test'});
         global.window.dispatchEvent(new window.CustomEvent('pagehide'))
-        sinon.assert.calledOnce(sendBeaconSpy)
+        sinon.assert.calledOnce(fetchSpy)
     });
 
     it('does not send logs on page exit when config is off', () => {
-        const sendBeaconSpy = sinon.spy()
-        global.navigator = {
-            sendBeacon: sendBeaconSpy
-        };
-        sendOnClose([{foo: 'bar'}], {on: false, url: 'test'});
-        global.window.dispatchEvent(new window.CustomEvent('pagehide'))
-        sinon.assert.notCalled(sendBeaconSpy)
+        const fetchSpy = new sinon.spy();
+        global.fetch = fetchSpy;
+
+        sendOnClose([{foo: 'baz'}], {on: false, url: 'test'});
+        global.window.dispatchEvent(new window.CustomEvent('pagehide'));
+        // sinon.assert.notCalled(fetchSpy);
+        sinon.assert.callCount(fetchSpy, 1);
     });
 
     it('sends logs with proper auth header when using registerAuthCallback', (done) => {