Start Email-to-Case Threads from a Case record in Salesforce

Turns out Service Cloud's Email-to-Case feature lets you start email threads from the case itself. Although it's called Email-to-Case, it's functionality lets you make the case first and then the outbound email.
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[@SaurabhShende]

Hello, in case record, in feed tap 1) post 2) email but email is missing from my org what is the solution

[@alessandromassi3659]

Hello, I'm facing a problem here. I don't want the ThreadID showing in the Subject and the Body of the email. Problem is that if I disable both, when I try to reply to the thread, a new case is created every time. Is there a way to "hide" that ThreadID string? Maybe trough CSS?
Thanks.

[@aakashjain8356]

hello i am not able to set up email threading in my org can anyone help me out with all the steps if i am missing something