Pass data from active row to an Active TextBox

Hi,

I try to send the data from the current row to an Active TextBox having a "specific" format.
Actually it's a sort of preview email body. If I am happy with the collected data, I just click and send the email without .display.
I tried with the UserForm or other ways, unsuccessful!
I attached a sample.

Could you help me, please?

Thank you.
Cheers