[otrs] Notify Customer of follow-up by agent

Hey Guys, Im having an issue with adding an auto-reply. In our situation, me, an agent. Get a e-mail that a new ticket has entered my queue. In some situations im not able to get on the dashboard to read the ticket (mobile internet), so replying to the e-mail that I got that a ticket has entered my Queue would add a note in the ticket. I would like to config that the new added note (only by e-mail) automatically gets forwarded to the customer, anyone has any clue how to set this up in event-based notification? Thanks for the help guys. Grtz, Gerrit