Conversation history is not displayed

Hey,

our Zammad system is linked to an O365 Acc, if I answer via Zammad on mails that works. But the recipient of my answer DOES NOT see what I have answered.
In short: The conversation history is not displayed.

Greetings
KM

This is an english speaking community. Please translate your article accordingly.
If you require german help, you can achieve this by getting a support contract with Zammad.

I translated now into english. May someone can help me.

I’ve removed the german verison. As I said, english speaking only. Thanks for translating your text.