As Ketan mentions, you can use Updox to send the correspondence. You can go one better, and use the messaging component of Updox to send the message electronically.
The consultant doesn't have to have an Updox account, you send them the message, Updox sets up their free account on the fly, and they get their notification in an email that you have sent them a message.
Less cost, less time, less trees, as well as getting a read confirmation if you want it.
