Why there is no form
A form on a page like this one usually does two things, and neither of them is answering you.
It hides the address so a reply has to come from somewhere you cannot write back to, and it
hands what you typed to a third party on its way. We would rather you had the address, kept
your own copy of what you sent, and could forward the thread to a colleague.
So: one mailbox, in plain text, with a button that puts it on your clipboard. The message
beside this one is the shape that gets answered in a single round — the workspace, the
channel, what you expected and what happened instead.