diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index c9e57eeaa4d..8abe3f271f7 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -4857,12 +4857,13 @@ class Form
      * 	@param	int				$disabled		Html select box is disabled
      *  @param	string			$sort			'ASC' or 'DESC' = Sort on label, '' or 'NONE' or 'POS' = Do not sort, we keep original order
      *  @param	string			$morecss		Add more class to css styles
-     *  @param	int				$addjscombo		Add js combo
+     *  @param	int				$addjscombo		    Add js combo
      *  @param  string          $moreparamonempty   Add more param on the empty option line. Not used if show_empty not set.
-     * 	@return	string							HTML select string.
+     *  @param  int             $disablebademail    Check if an email is found into value and if not disable and colorize entry. 
+     * 	@return	string							    HTML select string.
      *  @see multiselectarray
      */
-    static function selectarray($htmlname, $array, $id='', $show_empty=0, $key_in_label=0, $value_as_key=0, $moreparam='', $translate=0, $maxlen=0, $disabled=0, $sort='', $morecss='', $addjscombo=0, $moreparamonempty='')
+    static function selectarray($htmlname, $array, $id='', $show_empty=0, $key_in_label=0, $value_as_key=0, $moreparam='', $translate=0, $maxlen=0, $disabled=0, $sort='', $morecss='', $addjscombo=0, $moreparamonempty='',$disablebademail=0)
     {
         global $conf, $langs;
 
@@ -4907,7 +4908,10 @@ class Form
         	// Translate
         	if ($translate)
         	{
-	        	foreach($array as $key => $value) $array[$key]=$langs->trans($value);
+	        	foreach($array as $key => $value) 
+	        	{
+	        	    $array[$key]=$langs->trans($value);
+	        	}
         	}
 
         	// Sort
@@ -4916,8 +4920,19 @@ class Form
 
             foreach($array as $key => $value)
             {
+                $disabled=''; $style='';
+                if (! empty($disablebademail))
+                {
+                    if (! preg_match('/<.+@.+>/', $value))
+                    {
+                        //$value=preg_replace('/'.preg_quote($a,'/').'/', $b, $value);
+                        $disabled=' disabled';
+                        $style=' class="warning"';
+                    }
+                }
                 $out.='<option value="'.$key.'"';
-                if ($id != '' && $id == $key) $out.=' selected';		// To preselect a value
+                $out.=$style.$disabled;
+                if ($id != '' && $id == $key && ! $disabled) $out.=' selected';		// To preselect a value
                 $out.='>';
 
                 if ($key_in_label)
@@ -4929,6 +4944,7 @@ class Form
                     $selectOptionValue = dol_escape_htmltag($maxlen?dol_trunc($value,$maxlen):$value);
                     if ($value == '' || $value == '-') $selectOptionValue='&nbsp;';
                 }
+                //var_dump($selectOptionValue);
                 $out.=$selectOptionValue;
                 $out.="</option>\n";
             }
diff --git a/htdocs/core/class/html.formmail.class.php b/htdocs/core/class/html.formmail.class.php
index 6d88e735770..013b34699d7 100644
--- a/htdocs/core/class/html.formmail.class.php
+++ b/htdocs/core/class/html.formmail.class.php
@@ -264,6 +264,8 @@ class FormMail extends Form
 		{
         	$out='';
 
+        	$disablebademails=1;
+        	
         	// Define list of attached files
         	$listofpaths=array();
         	$listofnames=array();
@@ -392,7 +394,15 @@ class FormMail extends Form
                         }
                     } else {
                         $liste = array();
-                        $liste['user'] = $user->getFullName($langs) .' &lt;'.$user->email.'&gt;';
+                        if (empty($user->email))
+                        {
+                            $langs->load('errors');
+                            $liste['user'] = $user->getFullName($langs) . ' &lt;'.$langs->trans('ErrorNoMailDefinedForThisUser').'&gt;';
+                        }
+                        else
+                        {
+                            $liste['user'] = $user->getFullName($langs) .' &lt;'.$user->email.'&gt;';
+                        }
                         $liste['company'] = $conf->global->MAIN_INFO_SOCIETE_NOM .' &lt;'.$conf->global->MAIN_INFO_SOCIETE_MAIL.'&gt;';
                         // Add also email aliases if there is one
                         $listaliases=array('user_aliases'=>$user->email_aliases, 'global_aliases'=>$conf->global->MAIN_INFO_SOCIETE_MAIL_ALIASES);
@@ -413,7 +423,7 @@ class FormMail extends Form
                                 }
                             }
                         }
-                        $out.= ' '.$form->selectarray('fromtype', $liste, $this->fromtype, 0);
+                        $out.= ' '.$form->selectarray('fromtype', $liste, $this->fromtype, 0, 0, 0, '', 0, 0, 0, '', '', 0, '', $disablebademails);
                     }
 
         			$out.= "</td></tr>\n";
@@ -510,7 +520,7 @@ class FormMail extends Form
         			if (! empty($this->withto) && is_array($this->withto))
         			{
         				if (! empty($this->withtofree)) $out.= " ".$langs->trans("or")." ";
-        				$out.= $form->selectarray("receiver", $this->withto, GETPOST("receiver"), 1);
+        				$out.= $form->selectarray("receiver", $this->withto, GETPOST("receiver"), 1, 0, 0, '', 0, 0, 0, '', '', 0, '', $disablebademails);
         			}
         			if (isset($this->withtosocid) && $this->withtosocid > 0) // deprecated. TODO Remove this. Instead, fill withto with array before calling method.
         			{
@@ -522,7 +532,7 @@ class FormMail extends Form
         					$liste[$key]=$value;
         				}
         				if ($this->withtofree) $out.= " ".$langs->trans("or")." ";
-        				$out.= $form->selectarray("receiver", $liste, GETPOST("receiver"), 1);
+        				$out.= $form->selectarray("receiver", $liste, GETPOST("receiver"), 1, 0, 0, '', 0, 0, 0, '', '', 0, '', $disablebademails);
         			}
         		}
         		$out.= "</td></tr>\n";
@@ -544,7 +554,7 @@ class FormMail extends Form
         			if (! empty($this->withtocc) && is_array($this->withtocc))
         			{
         				$out.= " ".$langs->trans("or")." ";
-        				$out.= $form->selectarray("receivercc", $this->withtocc, GETPOST("receivercc"), 1);
+        				$out.= $form->selectarray("receivercc", $this->withtocc, GETPOST("receivercc"), 1, 0, 0, '', 0, 0, 0, '', '', 0, '', $disablebademails);
         			}
         		}
         		$out.= "</td></tr>\n";