How to create and design website for selling SMS?

You can white-label your domain/sub-domain and customize your website as per the themes available.

You can learn how to white label your website from the link mentioned below:

Also, you can learn to customize your website with the help of the below-mentioned article:

1. Go to the My website option available at the bottom section of the sidebar. (Refer screenshot)

2. Add the domain name of your choice in the field.

3. Select a theme of your choice from the available options.

4. You can also add a logo of your website if you wish to.