Title: Mail conflict
Last modified: August 22, 2016

---

# Mail conflict

 *  Resolved [fran4444](https://wordpress.org/support/users/fran4444/)
 * (@fran4444)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/mail-conflict/)
 * Attempted to activate the Heartbeat Control plugin, but the following alert shows
   up, and since mail, (using plugin: wpMandrill), has to work, have to forgo trying
   HC.
 * Alert:
    “Mandrill: wp_mail has been declared by another process or plugin, so
   you won’t be able to use Mandrill until the problem is solved.”
 * [https://wordpress.org/plugins/heartbeat-control/](https://wordpress.org/plugins/heartbeat-control/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Jeff Matson](https://wordpress.org/support/users/jeffmatson/)
 * (@jeffmatson)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/mail-conflict/#post-5591632)
 * From the looks of it, this is what’s causing it:
 *     ```
       if(!function_exists('wp_get_current_user')) {
       	include(ABSPATH . "wp-includes/pluggable.php");
       }
       ```
   
 * Because the I am including pluggable.php to ensure that get_current_user can 
   be called, wpMandrill is stating that content is already loaded. Right now, I
   don’t have a perfect solution for it, but I’m putting it on the roadmap for a
   future release.
 * Thanks for the heads up!
 *  [joost-020](https://wordpress.org/support/users/joost-020/)
 * (@joost-020)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/mail-conflict/#post-5591805)
 * Exactly the same issue here. Would be fantastic to get a solutions.
 * Cheers
 *  Plugin Author [Jeff Matson](https://wordpress.org/support/users/jeffmatson/)
 * (@jeffmatson)
 * [11 years, 3 months ago](https://wordpress.org/support/topic/mail-conflict/#post-5591915)
 * This has been resolved in 1.0.1. Updating should fix it for you.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Mail conflict’ is closed to new replies.

 * ![](https://ps.w.org/heartbeat-control/assets/icon-256x256.png?rev=2952275)
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## Tags

 * [conflict](https://wordpress.org/support/topic-tag/conflict/)
 * [mail](https://wordpress.org/support/topic-tag/mail/)

 * 3 replies
 * 3 participants
 * Last reply from: [Jeff Matson](https://wordpress.org/support/users/jeffmatson/)
 * Last activity: [11 years, 3 months ago](https://wordpress.org/support/topic/mail-conflict/#post-5591915)
 * Status: resolved