title: WhatsApp API (send phone)
body: <p>Suppose that the site has a phone number and a &quot;Whatsapp&quot; button, which contains a link <a href="https://wa.me/phone" rel="nofollow noreferrer">https://wa.me/phone</a> number, when clicked, a new tab opens in the browser and the link is converted to <a href="https://api.whatsapp.com" rel="nofollow noreferrer">https://api.whatsapp.com</a> / send /? phone =% 2Bphonenumber &amp; text &amp; app_absent = 0, then a chat with a number in the desktop application opens. But sometimes WhatsApp returns 429 error, allegedly the number of requests has been exceeded. Although the requests leave no more than 10, with an interval of 1-2 minutes. Is this interval not enough?</p>