It is almost ridiculous how easy it is to configure Laravel 4 to send emails via Mandrill.

Open: app/config/mail.php

Change  your details to reflect your Mandrill SMTP & API Credentials:

 'host' => 'smtp.mandrillapp.com',
 'port' => 587,
 'username' => 'mandrill@example.com',
 'password' => 'any valid Mandrill API key'

Save. You’re now sending your transactional emails using Mandrill.