Mandrill Email

This extension provides email delivery for CiviMail and/or other email from CiviCRM via the Mandrill service. Mandrill is an email service that runs on the email infrastructure that powers MailChimp. It is a high quality, low cost option for email delivery, with no loss of delivery functionality, quality or performance in comparison with alternatives. 

CiviCRM Cron

Use Drupal's cron to call CiviCRM's cron. CiviCRM's cron can (and should) be called directly from the command line, but this is a simple way to define the user, pass, and sitekey used in the CiviCRM url and call CiviCRM's cron when it's not possible or convenient to configure CiviCRM's cron.