What I mean is that if you have an Outlook account, and you want to use Thunderbird for it, you will need to sync your Outlook calendar with Thunderbird. Outlook uses Exchange ActiveSync instead of CalDav/CardDav for this syncing.
The way to give Thunderbird these capabilities are by installing these two connected addons [1, 2]. At least till June 2022, I could see meeting invites from colleagues in Thunderbird. I would also see the translucent event in the calendar in Thunderbird. But accepting the invite would not work [2]. Also creating and sending Outlook calendar events from within Thunderbird didn't work. So, I always had to open the web Calendar to do these things. Thunderbird was only good for meeting reminders.
There is a new major release of the addon since then, so it is possible that the bug is fixed.
> I apparently don't get event invites from Outlook Calendars then
Obviously if your email/calendar account is something else, then you have no problem. If someone sends an invite to my gmail, from their outlook, I can accept it fine from within Thunderbird, because Thunderbird/gmail are communicating using Caldav (I think).
> Which clients do work with that then, only Outlook itself?
I will use Thunderbird as much as possible till it is pried from my cold dead hands!
The way to give Thunderbird these capabilities are by installing these two connected addons [1, 2]. At least till June 2022, I could see meeting invites from colleagues in Thunderbird. I would also see the translucent event in the calendar in Thunderbird. But accepting the invite would not work [2]. Also creating and sending Outlook calendar events from within Thunderbird didn't work. So, I always had to open the web Calendar to do these things. Thunderbird was only good for meeting reminders.
There is a new major release of the addon since then, so it is possible that the bug is fixed.
> I apparently don't get event invites from Outlook Calendars then
Obviously if your email/calendar account is something else, then you have no problem. If someone sends an invite to my gmail, from their outlook, I can accept it fine from within Thunderbird, because Thunderbird/gmail are communicating using Caldav (I think).
> Which clients do work with that then, only Outlook itself?
I will use Thunderbird as much as possible till it is pried from my cold dead hands!
[1] https://github.com/jobisoft/TbSync/
[2] https://github.com/jobisoft/EAS-4-TbSync/wiki/About:-Provide...