Merge pull request #60 from SparkPost/issue-59

Fix ReplyTo for latest wordpress

mailer.http.class.php

@@ -255,10 +255,12 @@ protected function get_request_headers($hide_api_key = false)
     }
 
     /**
-     * Returns the list of Reply-To headers
+     * Returns the list of Reply-To recipients
+     * For WordPress version below 4.6
      * @return array
+     * TODO Remove this when wordpress does not support version below 4.6
      */
-    protected function get_reply_to()
+    protected function parse_reply_to_from_custom_header()
     {
         $replyTos = array();
         foreach ($this->CustomHeader as $header) { // wp_mail sets Reply-To as custom header (does not use phpmailer->addReplyTo)
@@ -271,6 +273,37 @@ protected function get_reply_to()
         return implode(',', $replyTos);
     }
 
+    /**
+    * Returns list of Reply-To recipients
+    * For WordPress 4.6 and above
+    * @return array Formatted list of reply tos
+    */
+    protected function parse_reply_to()
+    {
+        $replyTos = array();
+        foreach ($this->ReplyTo as $reply_to) {
+            $name = $reply_to[1];
+            $email = $reply_to[0];
+            if(empty($name)) {
+              $replyTos[] = $email;
+            } else {
+              $replyTos[] = sprintf('%s <%s>', $name, $email);
+            }
+        }
+
+        return implode(',', $replyTos);
+    }
+
+    protected function get_reply_to()
+    {
+      $wp_version = get_bloginfo('version');
+      if(version_compare($wp_version, '4.6') == -1) { // if lower than 4.6
+        return $this->parse_reply_to_from_custom_header();
+      } else {
+        return $this->parse_reply_to();
+      }
+    }
+
     protected function build_recipient($email, $name = '', $header_to = '') {
       $recipient = array(
         'address' => array(

readme.txt

@@ -2,8 +2,8 @@
 Contributors: sparkpost, rajuru
 Tags: sparkpost, smtp, wp_mail, mail, email
 Requires at least: 4.0
-Tested up to: 4.4.2
-Stable tag: 2.4.0
+Tested up to: 4.6
+Stable tag: 2.4.1
 License: GPLv2 or later
 
 Send all your email from WordPress through SparkPost, the most advanced email delivery service.
@@ -47,6 +47,9 @@ Visit our [support site](https://support.sparkpost.com/) for help.
 
 == Changelog ==
 
+= 2.4.1=
+- Fix Reply-To header issue with WordPress 4.6
+
 = 2.4.0 =
 - Add supports for CC and BCC using HTTP API
 

wordpress-sparkpost.php

@@ -6,7 +6,7 @@
 Plugin Name: SparkPost
 Plugin URI: http://sparkpost.com/
 Description: Send all your email from Wordpress through SparkPost, the world's most advanced email delivery service.
-Version: 2.4.0
+Version: 2.4.1
 Author: SparkPost
 Author URI: http://sparkpost.com
 License: GPLv2 or later