Hey,

On Sun, 2020-10-25 at 15:25 +0900, Simon Walter wrote:
>
> I am particularly interested in a "groupware" type of solution. I am
>
> currently using SOGo. I am not stuck on that though. Things like
> CalDAV,
>
> CardDAV, etc., are useful for me as I like to keep my contacts and
>
> schedule synced across devices.

from my experience, evolution can be a complete replacement for
thunderbird as groupware... caldav/carddav/pgp are included by default.
currently i use tbsync & other extensions in TB to sync with own
nextcloud.. (only filelink extension isn't available in evolution)

still recommending TB to clients/people though... cross OS
compatibility and extremely simple moving/backing up TB profiles
between systems being the main reason, and autoconfig accounts when
supported by server, another... (like outlook does...).

my 2c,
d