2024 UPDATE: we have added full support for Gmail oAuth, more details at
https://www.jitbit.com/news/5376-google-oauth-support-for-gmail-mailboxes-in-jitbit-helpdesk/Google has phased out the "allow less secure apps" setting, that allowed connecting to your mailbox via IMAP/POP using your Google account password.
..and then use this app password for the IMAP/POP connection inside the helpdesk system.
We have added full oAuth support for O365 and GMail support is on the way (however the Gmail workaround still works)