WhatsApp lets you add buttons to message templates. There are two types of buttons: Quick replies and Call to action buttons. These buttons open up many opportunities for businesses worldwide to engage with their customers on WhatsApp, one of the most popular messaging applications. Quick replies let businesses define buttons that users can tap to respond. When a Quick reply is tapped, a message containing the button text is sent in the conversation. Call to action buttons trigger a phone call or open a website when tapped. Please note that at this time, WhatsApp does not support deeplinks. To use buttons, you need to submit them as part of a message template to WhatsApp. Once approved, templates containing buttons can be sent by sending the message text in your API request.