Example Project for Tuts+ Tutorial:
"How to Use Mandrill to Send Email in WordPress"

This tutorial will teach you how to use Mandrill to make WordPress email sending 
more reliable and traceable. You will also learn how to replace the welcome message 
sent to new users with a new, template based HTML email sent using the Mandrill API.

Tutorial URL: 
https://code.tutsplus.com/tutorials/how-to-use-mandrill-to-send-email-in-wordpress--cms-21396

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The source code in the directory mandrill_emailer is a fully functional WordPress plugin
that routes all WordPress email messages through Mandrill using SMTP and replaces the
WordPress function wp_new_user_notification with a custom version that uses Mandrill
to send a template based HTML email message.

The most recent version of the PHP Mandrill API library at the time of publication
is included in the plugin codebase.