How instant messaging works
TES Connect has a messaging service. Click on the Inbox in your Profile panel and you’ll see the latest messages you’ve received. To manage your messages and send a message click on the Go to Inbox link.
How do I send a message to another TES user?
TES has a personal messaging service. Click on the Inbox (appears at the top of the page when you login) and you'll see the latest messages you've received. To write a message click on the Compose tab. Type the recipient's name or you can pick a name from your Friends' A-Z list. Then just type in your subject line, message and click on the Send button.
Another method is to click on the user name of the user you wish to contact. While viewing user's profile, you'll notice an option ‘Send a message' next to their photo (See screen shot)