Denied unemployment, how do I appeal? - what worked for you?

I got a denial letter last week saying I left my job voluntarily, but I was let go as an operations analyst. My employer's version of events does not match mine, and I have emails that show it. Did you bring documents or only talk?

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.

I printed my emails in order and wrote a one-page timeline. The hearing officer kept going back to it.