How to create a direct link to WhatsApp account?

1. Copy the link: https://api.whatsapp.com/send?phone=ХХХ.
2. Replace XXX with the ten-digit number of your WhatsApp account. 

3. If necessary, you can specify a text that will automatically appear in the client text entry field when you click on a link. To do this, place an & sign after the number and then enter the text, replacing spaces with a % sign. 

Example: https://api.whatsapp.com/send?phone=79101011010&Your%text.