There are times when you don't need to work to sell in the benefits of a new service, the incumbent service you're improving on does it all for you, as it was with Voice SMS the other day.
A customer calls up very irritated that SMS messages he sent to a group of BT landlines had taken over 16 hours to arrive. The mobile recipients had received their messages almost instantaneously as usual.
Our support team investigated and all seemed fine from our side, as far as we could deduce there was some kind of delay on the BT side/operator interconnect. Unfortunately that was all the information we could glean.
"Try Voice SMS to the landlines instead" we suggested, "let us know what you think".
Result: another happy customer. He can see what's happened all the way through the message delivery process and has the added benefit of an acknowledgement.
I love it when a plan comes together ;-)