If someone emails you a numbered list of questions, you should reply and either:
(a) Insert your responses (ideally with coloring) behind each question (example: see my responses in blue below), or
(b) Copy+paste the questions up to your new email and then provide answers behind each.
I frankly can't remember my questions by the time you reply, so a numbered list of answers just makes me feel like I'm on Jeopardy.
Attachments are even worse; please stick to the native format of an email.
