RCS messages are multimedia messages that, unlike SMS, can contain images, carousels, and Call To Action buttons. In the MailUp platform, you can send them after creating an Agent (sender), which is verified and certified by Google (MailUp handles all the operations, and you only need to fill in the necessary information to create the Agent). Once the Agent is approved, you can create your RCS message with simple steps. You will also be asked to create a fallback SMS, which is a standard SMS message that will be sent to recipients who are not enabled to receive RCS. This way, all your recipients will receive your message: those who are enabled to receive RCS will get the RCS message, and those who are not will receive the fallback SMS.