With most email providers phasing out basic authentication, this is . The OAuth2 plugin allows osTicket to authenticate against email servers (Gmail/Outlook) using modern protocols, eliminating the need to store passwords directly.
If you're interested, I can provide:
Connect to your server and navigate to your core osTicket installation folder. Look for the directory path: /include/plugins/ . Upload your .phar file or unzipped plugin folder directly into this directory. Step 3: Install via the Admin Panel osticket plugins