Email delivery API from MailChimp

Mandrill is a reliable, scalable, and secure delivery API for transactional emails from websites and applications. It's ideal for sending data-driven transactional emails, including targeted e-commerce and personalized one-to-one messages.

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Billions of emails delivered each month

Trusted by more than 500,000 customers, Mandrill runs on a globally distributed infrastructure that can deliver emails in milliseconds.

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  • API Uptime


  • SMTP Uptime


  • API Error Rate


Status Updated: April 30, 2013 06:30 PM UTC

See how we make SMTP fast – and why you should care

Easy to integrate

Rapid SMTP and API integration

Don't spend all day wiring up your own bulky custom solution. Get started with Mandrill's SMTP or API integration in no time.

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  include_once "swift_required.php";


  $transport = Swift_SmtpTransport::newInstance('', 587);
  $swift = Swift_Mailer::newInstance($transport);



Mandrill was developed by MailChimp, a company with more than 10 years of experience building a robust email marketing platform. MailChimp sends 15 billion emails every month for more than 8 million customers.