Since your clients need to add your WhatsApp number to chat with you, it's easy to include a short link in your social profiles or online so that they can click to chat with you directly.
Creating your link
Use https://wa.me/<number> where the <number> is a full phone number in international format. When adding the phone number in the international format, omit any zeroes, brackets, or dashes.
Create your link with a pre-filled message
The pre-filled message will automatically appear in the text field of a chat.
Use https://wa.me/whatsappphonenumber?text=urlencodedtext where the WhatsApp phone number is a total phone number in the international format, and URL-encoded text is the URL-encoded pre-filled message.
For more information, check the below video: