# Use case

## how can I use CartAt Whatsapp API for my business?

### &#x20;<mark style="background-color:yellow;">the most popular use cases as the following</mark>

<table><thead><tr><th>use case</th><th>example</th><th data-hidden></th></tr></thead><tbody><tr><td>one time password (OTP)</td><td>Hello dear Jhone due, your otp is: 1234</td><td></td></tr><tr><td>promotions messages</td><td>Hey there!<br>Find out the last collection on our website <br>https://example.com </td><td></td></tr><tr><td>sending reminders</td><td>Dear Jhone,<br>your subscription will terminate soon, please renew it before two days.</td><td></td></tr></tbody></table>

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