I was trying to create a custom template that would be sent to a guest during their stay which would give them the option to add an additional night if the calendar allowed. This template would have a link that would take the guest directly to their reservation page where they could add the night and make payment all in one. I'm being told that's not an option and they would have to respond to me with a yes/no and then I would have to make the change in the system and send a payment request. This seems really clumsy. Also, it would be great if it was possible to have a trigger where the system would be able to tell if the next night (after original departure) was available and automatically send the message.