Apple Mail Plugin does not work after update to Ventura 13.3

Sorry for my delayed answer.

Before the update everything worked fine.

And the „Allgemein“ tab?

As mentioned many times before: We do not have an Apple Mail extension.We have a plugin. We have never referred to it or advertised it as an extension.

And as @chrillek was directing you, it’s enabled in Apple Mail’s Preferences > General > Manage Plug-Ins.