SMSGatewayCenter’s builder supports: Heading, Subheading, Body, Caption (text); Short Answer (single-line input), Single choice (radio), Multiple choice (checkboxes), Dropdown, Date, Calendar (single or range); Image; and a Button (Continue/Done) at the bottom of each screen. Optional components such as Rich Text, Paragraph, Navigation List, Chips, or Image Carousel may be available depending on your version.