• Starting February 15, 2021, G Suite accounts will only allow access to apps using OAuth
• June 15, 2020 - Users who try to connect to an LSA (non-oauth) for the first time will no longer be able to do so.

(freescout-help-desk/freescout#390)

1. There is no way to use standard PHP IMAP extension https://www.php.net/manual/en/ref.imap.php to connect to Gmail using OAuth?

2. It will be impossible to access Gmail also via POP3 protocol without OAuth?