The addon that solves problems with the OAuth2 protocol
Although there are no definite terms yet, Google and Microsoft will end the support for authentication through username and password for IMAP and POP3 services, making it mandatory to switch to the OAuth 2.0 protocol.
In order to adapt your ((OTRS)) Community edition installation to the new protocol, our Rexpondo team has implemented the REXOAuth2 plugin.
More information about the plugin is available on our website rexpondo.com
What is OAuth2
OAuth 2 is the second version of the OAuth framework, an authorization protocol that allows applications to gain limited access to user accounts on an HTTP service
It works by delegating user authentication to the service hosting the user account and authorizing third-party applications to access the user account. OAuth 2.0 provides authorization streams for web and desktop applications and mobile devices.