# Activate a Credit Card Using Chat Apps --- Use communication channels to notify your clients that their new credit card has been sent and let them active it online once they receive it. The client will receive a notification message with a button to click. The button will include a phone number of the bank to call. This tutorial explains how to send credit card activation instructions to customers through [WhatsApp](https://www.infobip.com/docs/whatsapp). Note This tutorial uses WhatsApp as the communication channel but you can use other template-based communication channels, such as [KakaoTalk](https://www.infobip.com/docs/api/channels/kakao/alim/send-kakao-alim-message), [LINE](https://www.infobip.com/docs/api/channels/line/send-line-message), Viber, and Zalo. ## Prerequisites * [Infobip account](https://portal.infobip.com/login/?callback=https%3A%2F%2Fportal.infobip.com%2F). If you do not have one, you can create a [free trial account](https://www.infobip.com/signup). * Infobip API key with `whatsapp:message:send` scope. You can find out more about how to create an API key with the correct scope [here](https://www.infobip.com/docs/essentials/api-essentials/api-authorization). * Your favorite HTTP client. In this example, we will use `curl`. Additionally, you can choose the official [Infobip SDK](https://www.infobip.com/docs/sdk) for your preferred programming language. * Your sender. If you are in the free trial period, you can use Infobip's test sender, `447860099299`. If you want to configure your custom sender, request a new number or an alphanumeric sender through the [Infobip account](https://portal.infobip.com/channels-and-numbers/channels/sms/overview) or using Infobip Numbers API. * Destination - a phone number to which the message will be sent. If you are in the free trial period, you can only send messages to your verified phone number. ## What is a WhatsApp template message? As opposed to regular messages that need to be user-initiated and can only happen within a 24-hour window, template messages can be sent and delivered at any time. Check out our [product documentation](https://www.infobip.com/docs/whatsapp/message-types-and-templates#message-templates) for more details. Note Each communication channel has its own template compliance and guidelines. ## Summary of the steps * Create and register a WhatsApp template. * Send a WhatsApp template message. ## Create a template [#create-a-template] You can create a WhatsApp template through the API or use the Infobip web interface. Note For other template-based communication channels, contact your Infobip account manager to create and register a template. ### Use the web interface Here are some sample placeholders you can use to personalize your template message. For the detailed steps on how to register a new template, check out our [product documentation](https://www.infobip.com/docs/whatsapp/message-types-and-templates/message-templates#create-and-register-a-whatsapp-message-template). | Template name | Template body | Language | Call to Action Template Buttons | Approved | | --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------- | -------- | ------------------------------------------------------------------------------------------------------------------------ | -------- | | Card_activation | Hi {{1}}. Your credit card has been sent to your address today. In order to activate your card, please give us a call. | en | Button:Type of action: Call Phone NumberButton Text: Contact us Country: GB +44 Phone Number: 1123456789 | ✅ | Note Some channels don't support buttons. Provide it within a template's text field instead. ### Use the API Use the Create a WhatsApp template endpoint to create your template. ```bash curl -L -g 'https://{baseUrl}/whatsapp/2/senders/447796344125/templates' \ -H 'Authorization: {authorization}' \ -H 'Content-Type: application/json' \ -H 'Accept: application/json' \ -d '{ "name": "media_template_with_call_to_action_buttons", "language": "en", "category": "MARKETING", "allowCategoryChange": false, "structure": { "body": { "text": "Hi {{1}}. Your credit card has been sent to your address today. In order to activate your card, please give us a call.", "examples": [ "example" ] }, "buttons": [ { "text": "Contact us", "phoneNumber": "1123456789", "type": "PHONE_NUMBER" } ], "type": "MEDIA" } }' ``` __Key points:__ * Once you create a template, Infobip sends it for the WhatsApp validation process. You can edit the template, following the editing rules. * For `category`, use the `MARKETING` value. This will adapt further field options in the API docs. * For `buttons`, use `PHONE_NUMBER`. This will adapt further field options in the API docs. ### Register a WhatsApp template Infobip takes care of your template registration. During the process, you can edit your template following the editing rules. You can also set up a webhook to get the updates about your template registration process. ## Send a message [#send-a-message] Once registered, use the template to contact users for card verification. ```bash curl -L -g 'https://{baseUrl}/whatsapp/1/message/template' \ -H 'Authorization: {authorization}' \ -H 'Content-Type: application/json' \ -H 'Accept: application/json' \ -d '{ "messages": [ { "from": "441134960000", "to": "441134960001", "messageId": "a28dd97c-1ffb-4fcf-99f1-0b557ed381da", "content": { "templateName": "card_activation", "templateData": { "body": { "placeholders": [ "Nick" ] } }, "language": "en_GB" } } } ] }' ``` __Key points:__ * Use the international number formatting when adding a number to the `to` field. For example, for British numbers, the value will look like this: `44754322576`.