When I want to email the client from a task, I click on email and have to copy the task ID and create a subject like:

[task_id] Subjectline

Because right now I cannot use the variable task_id in the email template. With all automation power, I must be able to do so.

Right now I have created a button to 'sent email confirmation' so I can mail the client the creation of the task, but above what I mean is that normal email replies I cannot always use automations and want to include the task id in the subject line after selecting an email template.