There are two ways to send messages:

• If you're a driver, you can send messages to all passengers who have booked a place on your route. You can also answer questions from potential passengers who would like to know more before booking.
• If you're a passenger, you'll be able to contact the drivers who've placed an ad to get more information about the route. You can also contact your driver once the booking has been made to agree on the final details.

It's not possible for two enthusiasts to communicate in any other way, as the aim of the platform is to carpool together.