Whatsapp.me is an open source plugin for WordPress that allows users to contact you directly to Whatsapp via your website by adding a small button on both mobile & desktop sites. You can select a mobile-only option if you want the button to be visible only on mobile devices. WhatsApp Web/App will open on the desktop (if available). You can use a call to action to write a message encouraging users to contact you through WhatsApp, define a timeout to display the call-to-action message, and if you have Google Analytics, an event is triggered when the user launches WhatsApp. Can override call to action or hide button on every post, page or custom post.