It carries a name and a form. That is all the software here does, and it is the whole reason any personal data exists.
The name you type, the address you type and the words you write. Nothing else. The page makes no request to another server, so there is no analytics provider that could see you arrive or leave.
Read it, answer it, and keep it in one mailbox. We do not pass it on, and there is no list to be added to, because no list exists.
Write once more and say remove. The whole exchange is deleted — not archived, not anonymised, deleted. We confirm in a single sentence.