# Getting started with RCS

To begin sending RCS messages to your customers' mobile devices, you need to register and launch a sender using the Provisioning API. This means submitting sender business and branding details, as well as completing a launch questionnaire about the purpose and the content of the messages. You can also specify test phone numbers to preview the appearance and functionality of your messages on a RCS capable device.

Check the [RCS senders guide](/docs/provisioning-api/getting-started/rcs/senders) to learn more.

Note:
You may also go to the [Sinch Build Dashboard](https://dashboard.sinch.com/) to view and create RCS senders via a user interface.