It's an initial release of the WhatsApp Live Chat Button For Blogger Template. If you are looking for: How to Add a WhatsApp Live Chat Widget for your blogger template, then it would be the great one ...

Click the HTML editor in the menu to load the code. Scroll down the page to where you want to place the Facebook button. Add the following code to include a Facebook button: ...

The Skype website offers the ability to generate buttons that initiate a voice call or instant message using the Skype client when clicked, but the code is meant for websites and not emails.