From Newsgroup: alt.privacy

A German state has successfully dropped Exchange Server and Outlook in
favor of open-source alternatives like Mozilla Thunderbird. It plans to
dump SharePoint and Microsoft Office next.

Back in 2021, the German state of Schleswig-Holstein said that it doesn't
want to be dependent on Microsoft or any closed-source proprietary
software, for that matter. As such, it announced plans to ditch Windows
and Office applications in favor of alternatives like Linux and
LibreOffice. While that migration is still underway, the state did achieve
a significant milestone recently.

The Register reports that Schleswig-Holstein has finally gotten rid of Exchange Server and Outlook and migrated fully to Open-Xchange and Mozilla Thunderbird. This is no small feat, as it involved the transfer of almost 30,000 mailboxes and over 100 million emails and calendar items. Although
the state did face some challenges along the way, it was ultimately
successful in overcoming them.

The German state's Digitalization Minister Dirk Schr||dter hailed it as a victory in the path to achieving digital sovereignty, and is quoted as
saying (machine translated):

From the State Chancellery and the ministries, to the judiciary and state police, and to other state authorities rCo our approximately 30,000
employees have embarked on a new path together. We want to become
independent of large tech corporations and ensure digital sovereignty. Now communication.

https://www.neowin.net/news/german-state-finally-ditches-outlook-now- dumping-office/
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