In the past (v. 4.5.x) I tested CiviMail for bulk mailings and had lots of trouble process bounces via the return channel. I know there is a wonderful plugin for transactional emails, but for bulk mailing, Mandrill is very reasonable and provides some great complimentary reports. I expect it should work with Mandrill's SMTP functionality directly.

So before I dive in, I'm simply asking if anyone has gotten this to work and if so, could you please share your config.

  • FYI - The Mandrill extension now supports bulk mail (2.0). I have been using it and it works .... however I have run into some problems which are noted in the issue queue: github.com/JMAConsulting/biz.jmaconsulting.mte/issues . It can get pretty complicated to debug. I also discovered that the next minor release should support Mandrill SMTP bounces which is all I really need and will try that next: issues.civicrm.org/jira/browse/… to simplify things. Oct 1, 2015 at 20:56
  • NOTE: Using Mandrill for CiviMail bulk mailings is against the Mandrill T&C and if they detect you doing so they will lock/cancel your account with very little notice Apr 14, 2021 at 7:28

3 Answers 3


I've been doing some testing with the last release of the Mandrill Emails Extension and it's looking pretty quick and simple with the new version to do both transactional and bulk mailing (CiviMail) through Mandrill. Basically you install it, plug in your Login/API credentials (Administer > System Settings > Mandrill Smtp Settings), and indicate one or both of the types of email you'd like to use Mandrill for: Mandrill CiviCRM SMTP.

To get the report backs on bounces and the like, you use the "Mandrill Post to URL" on that screen to set up a Webhook in your Mandrill account and get notifications for all events except a message being sent:

Mandrill webhook

In the little testing I've been able to do, it seems pretty much plug-and-play in terms of the bounce reporting getting back into CiviCRM.

The updated README is quite thorough, too.


There were a lot of people at CiviCon Denver at the dev ops session using Mandrill for bulk email. I'm not one of them so don't have a config to share, but can confirm that some very experienced providers use it. It was more popular than CiviSMTP or Amazon SES. The only one I recall specifically is CiviDesk, who praised the ability to use sub accounts to track their clients' usage separately. Shoot them an email perhaps?

  • Cool. Now I'm encouraged to try again and see what the issue was but If someone could share a working configuration that would be swell. Jun 3, 2015 at 3:07
  • Jon can you edit your answer to clarify if people were using this for bulk, mass emailing through CiviCRM or just transactional? As far as I can tell from the extension github.com/JMAConsulting/biz.jmaconsulting.mte/issues/80 no work was yet done on bounce handling.
    – herb
    Jun 3, 2015 at 14:32

Have you tried this new extension? https://civicrm.org/extensions/mandrill-email

I tested it. Mandrill processes the bounced emails but Civicrm doesn't pick it up. I might have a settings wrong or missing. Let us know if you find something.

  • Works now! I forgot to create the webhook in mandrill
    – Yossi
    Jul 9, 2015 at 0:02
  • Works now! I forgot to create the webhook in mandrill
    – Yossi
    Jul 9, 2015 at 0:03

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