WhatsApp now offers a feature called" Click To Chat " which allow recipient of email to initiate a chat with you with just click of button or link So how to create a link or a button? WhatsApp now offer " Click To Chat " feature which allows you to begin chat with someone without having having their number saved in contacts. This feature is very useful for marketing enthusiast. You can add a link with your WhatApp phone number in EDM / Newsletter so that user / recipients can get back to you with a click of a button or link. How do i add button / link to my EDM / Newsletter? You can do so by adding phone number & predefined message to following link https://api.whatsapp.com/send?phone=XXXXXXXXXX&text=My Message will go here You need to remember few thing while creating this link Add phone number without without Zero's 00 or Plus + to start of phone number You also need Encode message of you can encode complete URL https:/...