Route content from external email address into Zendesk and create tickets for the 'Reply-to' fields

Hi,

We have emails for external system that we want to create tickets off the back off. 

Can anyone help with a workaround?

I need emails sent to ADDRESS A to re-direct to Zendesk, autocreate a ticket, and then send ticket confirmation email out to the 'Reply-email' (the person sending the email, not ADDRESS A), letting them know this is now a support ticket.

Many thanks