A while ago Microsoft and Google announced they would close basic connections for IMAP mailboxes on their services Office 365 and Google suite:
The current crisis has made them to postpone the deadlines of termination to 2021, but starting from October 2020, in particular for Azure / Office, new accounts will have the “basic” authentication disabled by default (it will be possible to re-enable it until next year).
To overcome this upcoming eol, we developed a mini plugin available for GLPI community, which allows to create an oauth connection to their services.
It lets you to declare an oauth client from a list of suppliers and then use this client in your mail collectors:
You can now download this plugin via integrated marketplace of GLPI 9.5 or from the plugins catalog.