Title: Pluggable.php coflict!
Last modified: November 3, 2016

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# Pluggable.php coflict!

 *  [catmaniax](https://wordpress.org/support/users/catmaniax/)
 * (@catmaniax)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/pluggable-php-coflict/)
 * Hello.
 * There is a conflict with pluggable.php when I activate another plugin “Yuzo Related
   Posts” ([https://wordpress.org/plugins/yuzo-related-post/](https://wordpress.org/plugins/yuzo-related-post/))
 * I asked the plugin author and he replied:
 * Yuzo needs to call the file pluggable.php
    Yuzo calls it a include_once (if already
   called, not called again). Please contact the author of the plugin postman and
   calls for support or say what the conflict with Yuzo.
 * He also released an update today, here’s the changelog concerning Postman:
    Fixed:
   Conflic with plugin Postman, change require_once to include_once
 * The issue still remains though even after the update. Whenever I activate Yuzo
   I get the following Postman error:
    Postman: wp_mail has been declared by another
   plugin or theme, so you won’t be able to use Postman until the conflict is resolved.
 * Is there any solution for this?
 * Please let me know.
    Thanks!
    -  This topic was modified 9 years, 7 months ago by [catmaniax](https://wordpress.org/support/users/catmaniax/).

Viewing 1 replies (of 1 total)

 *  Thread Starter [catmaniax](https://wordpress.org/support/users/catmaniax/)
 * (@catmaniax)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/pluggable-php-coflict/#post-8391684)
 * Sorry for the double post, but I can’t edit my original post.
 * Here’s the line of the diagnostic test as well to prove that the calling of pluggable.
   php from “Yuzo Related Posts” is the issue here:
 * WordPress wp_mail Owner: /………/wp-includes/pluggable.php

Viewing 1 replies (of 1 total)

The topic ‘Pluggable.php coflict!’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/postman-smtp_7c7b78.svg)
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## Tags

 * [conflict](https://wordpress.org/support/topic-tag/conflict/)
 * [pluggable](https://wordpress.org/support/topic-tag/pluggable/)
 * [pluggable.php](https://wordpress.org/support/topic-tag/pluggable-php/)
 * [Yuzo](https://wordpress.org/support/topic-tag/yuzo/)

 * 1 reply
 * 1 participant
 * Last reply from: [catmaniax](https://wordpress.org/support/users/catmaniax/)
 * Last activity: [9 years, 7 months ago](https://wordpress.org/support/topic/pluggable-php-coflict/#post-8391684)
 * Status: not resolved