Re: [otrs] Request for return receipt or delivery status notification

Given that no email system reliably can deliver such a thing or can define what it actually means, I'm not sure it's all that useful. What does "delivered" mean? In the customer's inbox? Opened? Read? Understood (if you can do this one, you'd be super rich)?

is it already in OTRS Request for return receipt or delivery status notification for sending messages ?