For #1, Currently the response uses your custom email address as the Reply-To address, but the email comes from a hubdesk.io email address. It's on my list to

For #1, Currently the response uses your custom email address as the Reply-To address, but the email comes from a hubdesk.io email address. It's on my list to add support for custom domains. For #2, yes. You can go back a forth with the user just using commments. For #3, that's also on my list to add. Thanks for the feedback!