HCoop offers a variety of ways to wrangle and access your email. Your email address is your login name, @hcoop.net.
Email sent to any of your HCoop-managed domains can be configured using Domtool. Please consult the Domtool User Guide for details on how to set that up.
We use the Maildir format (that is, a directory which contains files, each file containing exactly one message) rather than the mbox format (where all messages reside in one large mbox file).
By default, all email is delivered to your ~/Maildir directory. This directory is created for you when your account is created. So please do not delete the ~/Maildir directory if you value mail delivery and access.