diff --git a/ProcessMaker/Managers/OauthMailManager.php b/ProcessMaker/Managers/OauthMailManager.php
index 6d2919075a..10835b63d5 100644
--- a/ProcessMaker/Managers/OauthMailManager.php
+++ b/ProcessMaker/Managers/OauthMailManager.php
@@ -63,15 +63,13 @@ protected function createSmtpTransport($config)
             case 'google':
                 $accessToken = $this->checkForExpiredAccessToken();
                 // Update Authentication Mode
-                $transport->setAuthMode('XOAUTH2')
-                ->setUsername($this->fromAddress)
+                $transport->setUsername($this->fromAddress)
                 ->setPassword($accessToken);
                 break;
             case 'office365':
                 $accessToken = $this->checkForExpiredAccessToken();
                 // Update Authentication Mode
-                $transport->setAuthMode('XOAUTH2')
-                ->setUsername($this->fromAddress)
+                $transport->setUsername($this->fromAddress)
                 ->setPassword($accessToken);
                 break;
         }