There are several ways to do to it, but let's keep it simple, free, and easy to implement.
Copy and paste the following sentence and send to your agents. They will thank you for doing so and start making sales they are now missing.
"We have run across an online new home course we like. We thought some of you might be interested in learning more. If so, click here.
No contracts, no fees. no obligation. Just our gratitude, because this is how we are going to grow. By the way, your agents are going to thank you for this and wil start making sales they never new existed. And you can thank us for that! :)