diff --git a/gulliver/system/class.g.php b/gulliver/system/class.g.php
index d1e77a39a..077b4a37f 100644
--- a/gulliver/system/class.g.php
+++ b/gulliver/system/class.g.php
@@ -333,7 +333,7 @@ class G
      * @param string $key
      * @return string
      */
-    public function decrypt ($string, $key)
+    public static function decrypt($string, $key)
     {
         //   if ( defined ( 'ENABLE_ENCRYPT' ) && ENABLE_ENCRYPT == 'yes' ) {
         //if (strpos($string, '|', 0) !== false) return $string;
@@ -1820,7 +1820,7 @@ class G
     * @param type Array $aFields
     * @return type String
     */
-    public function replaceDataGridField($sContent, $aFields, $nl2brRecursive = true)
+    public static function replaceDataGridField($sContent, $aFields, $nl2brRecursive = true)
     {
         $nrt     = array("\n",    "\r",    "\t");
         $nrthtml = array("(n /)", "(r /)", "(t /)");
@@ -2816,7 +2816,7 @@ class G
      * @access public
      * @return array
      */
-    public function array_merges ()
+    public static function array_merges()
     {
         $array = array ();
         $arrays = & func_get_args();
@@ -2963,7 +2963,7 @@ class G
      *   Constants: SYS_*
      *   Sessions : USER_* , URS_*
      */
-    public function getSystemConstants($params = null)
+    public static function getSystemConstants($params = null)
     {
         $t1 = G::microtime_float();
         $sysCon = array();
@@ -5704,7 +5704,7 @@ class G
     *
     * @return md5($string)
     */
-    public function encryptOld ($string)
+    public static function encryptOld($string)
     {
         return md5($string);
     }
diff --git a/workflow/engine/classes/class.pmFunctions.php b/workflow/engine/classes/class.pmFunctions.php
index 0f2f93807..61000abe3 100755
--- a/workflow/engine/classes/class.pmFunctions.php
+++ b/workflow/engine/classes/class.pmFunctions.php
@@ -3652,7 +3652,7 @@ function PMFCopyDocumentCase($appDocUid, $versionNumber, $targetCaseUid, $inputD
  * @param string | $taskUid | Task Uid | The unique Id of the Task.
  * @param string | $userGroupUid | Uid from User or Group | The unique Uid from User or Group.
  *
- * @return int Returns 1 when is assigned.
+ * @return int | $result | Result | Returns 1 when is assigned
  */
 
 function PMFAddUserGroupToTask($taskUid, $userGroupUid)
@@ -3742,3 +3742,89 @@ function PMFRemoveUserGroupFromTask($taskUid, $userGroupUid)
     return 1;
 }
 
+/**
+ * @method
+ *
+ * Sends emails to user's group using a template file
+ *
+ * @name PMFSendMessageToGroup
+ * @label PMF Send Message To Group
+ * @link http://wiki.processmaker.com/index.php/ProcessMaker_Functions#PMFSendMessageToGroup.28.29
+ *
+ * @param string(32) | $groupId | Group ID | Unique id of Group.
+ * @param string(32) | $caseId | Case ID | The UID (unique identification) for a case, which is a string of 32 hexadecimal characters to identify the case.
+ * @param string | $from | Sender | The email address of the person who sends out the email.
+ * @param string | $subject | Subject of the email | The subject (title) of the email.
+ * @param string | $template | Name of the template | The name of the template file in plain text or HTML format which will produce the body of the email.
+ * @param array | $arrayField = [] | Variables for email template | Optional parameter. An associative array where the keys are the variable names and the values are the variables' values.
+ * @param array | $arrayAttachment = [] | Attachment | An Optional arrray. An array of files (full paths) to be attached to the email.
+ * @param boolean | $showMessage = true | Show message | Optional parameter. Set to TRUE to show the message in the case's message history.
+ * @param int | $delIndex = 0 | Delegation index of the case | Optional parameter. The delegation index of the current task in the case.
+ * @param mixed | $config = [] | Email server configuration | An optional array: An array of parameters to be used in the Email sent (MESS_ENGINE, MESS_SERVER, MESS_PORT, MESS_FROM_MAIL, MESS_RAUTH, MESS_ACCOUNT, MESS_PASSWORD, and SMTPSecure) Or String: UID of Email server.
+ * @param int | $limit = 100 | Limit | Limit of mails to send in each bach.
+ *
+ * @return int | $result | Result | Returns 1 when is send message to group
+ */
+function PMFSendMessageToGroup(
+    $groupId,
+    $caseId,
+    $from,
+    $subject,
+    $template,
+    $arrayField = [],
+    $arrayAttachment = [],
+    $showMessage = true,
+    $delIndex = 0,
+    $config = [],
+    $limit = 100
+) {
+    //Verify data and Set variables
+    $group = new \ProcessMaker\BusinessModel\Group();
+    $case = new \ProcessMaker\BusinessModel\Cases();
+
+    $group->throwExceptionIfNotExistsGroup($groupId, '$groupId');
+
+    $arrayApplicationData = $case->getApplicationRecordByPk($caseId, ['$applicationUid' => '$caseId'], true);
+
+    //Send mails
+    $criteriaGroupUser = $group->getUserCriteria($groupId, ['condition' => [[UsersPeer::USR_STATUS, 'ACTIVE', Criteria::EQUAL]]]);
+
+    $start = 0;
+
+    do {
+        $flagNextRecord = false;
+
+        $to = '';
+
+        $criteria = clone $criteriaGroupUser;
+
+        $criteria->setOffset($start);
+        $criteria->setLimit($limit);
+
+        $rsCriteria = GroupUserPeer::doSelectRS($criteria);
+        $rsCriteria->setFetchmode(ResultSet::FETCHMODE_ASSOC);
+
+        while ($rsCriteria->next()) {
+            $record = $rsCriteria->getRow();
+
+            $to .= (($to != '')? ', ' : '') . $record['USR_EMAIL'];
+
+            $flagNextRecord = true;
+        }
+
+        if ($flagNextRecord) {
+            $result = PMFSendMessage(
+                $caseId, $from, $to, null, null, $subject, $template, $arrayField, $arrayAttachment, $showMessage, $delIndex, $config
+            );
+
+            if ($result == 0) {
+                return 0;
+            }
+        }
+
+        $start += $limit;
+    } while ($flagNextRecord);
+
+    //Return
+    return 1;
+}
diff --git a/workflow/engine/classes/class.system.php b/workflow/engine/classes/class.system.php
index b744a1e7c..6838131c2 100755
--- a/workflow/engine/classes/class.system.php
+++ b/workflow/engine/classes/class.system.php
@@ -985,7 +985,7 @@ class System
         return $aChanges;
     }
 
-    public function getEmailConfiguration ()
+    public static function getEmailConfiguration()
     {
         $emailServer = new \ProcessMaker\BusinessModel\EmailServer();
 
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Group.php b/workflow/engine/src/ProcessMaker/BusinessModel/Group.php
index 8dd719b6f..d61d900e6 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Group.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Group.php
@@ -625,9 +625,13 @@ class Group
      *
      * return object
      */
-    public function getUserCriteria($groupUid, $arrayFilterData = null, $arrayUserUidExclude = null)
+    public function getUserCriteria($groupUid, array $arrayWhere = null, $arrayUserUidExclude = null)
     {
         try {
+            $flag = !is_null($arrayWhere) && is_array($arrayWhere);
+            $flagCondition = $flag && array_key_exists('condition', $arrayWhere);
+            $flagFilter    = $flag && array_key_exists('filter', $arrayWhere);
+
             $criteria = new \Criteria("workflow");
 
             $criteria->addSelectColumn(\UsersPeer::USR_UID);
@@ -642,17 +646,23 @@ class Group
                 $criteria->add(\GroupUserPeer::GRP_UID, $groupUid, \Criteria::EQUAL);
             }
 
-            $criteria->add(\UsersPeer::USR_STATUS, "CLOSED", \Criteria::NOT_EQUAL);
+            if ($flagCondition && !empty($arrayWhere['condition'])) {
+                foreach ($arrayWhere['condition'] as $value) {
+                    $criteria->add($value[0], $value[1], $value[2]);
+                }
+            } else {
+                $criteria->add(\UsersPeer::USR_STATUS, 'CLOSED', \Criteria::NOT_EQUAL);
+            }
 
             if (!is_null($arrayUserUidExclude) && is_array($arrayUserUidExclude)) {
                 $criteria->add(\UsersPeer::USR_UID, $arrayUserUidExclude, \Criteria::NOT_IN);
             }
 
-            if (!is_null($arrayFilterData) && is_array($arrayFilterData) && isset($arrayFilterData["filter"]) && trim($arrayFilterData["filter"]) != "") {
+            if ($flagFilter && trim($arrayWhere['filter']) != '') {
                 $criteria->add(
-                    $criteria->getNewCriterion(\UsersPeer::USR_USERNAME, "%" . $arrayFilterData["filter"] . "%", \Criteria::LIKE)->addOr(
-                    $criteria->getNewCriterion(\UsersPeer::USR_FIRSTNAME, "%" . $arrayFilterData["filter"] . "%", \Criteria::LIKE)->addOr(
-                    $criteria->getNewCriterion(\UsersPeer::USR_LASTNAME, "%" . $arrayFilterData["filter"] . "%", \Criteria::LIKE)))
+                    $criteria->getNewCriterion(\UsersPeer::USR_USERNAME, '%' . $arrayWhere['filter'] . '%', \Criteria::LIKE)->addOr(
+                    $criteria->getNewCriterion(\UsersPeer::USR_FIRSTNAME, '%' . $arrayWhere['filter'] . '%', \Criteria::LIKE)->addOr(
+                    $criteria->getNewCriterion(\UsersPeer::USR_LASTNAME, '%' . $arrayWhere['filter'] . '%', \Criteria::LIKE)))
                 );
             }