I got this email from Twitter today, with my response in the attached image.
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Hello,

We received your request to have your account reinstated.

Please respond to this email with the reason you believe your account suspension was in error and/or the reason you are requesting an appeal.

Once we receive your response, we will review and provide a follow up response with the outcome of our review. If this request is for an account reinstatement under our new criteria, please allow 3-5 days for us to review and respond. In some instances, it may take us longer to get back to you.

Thanks,
Twitter