diff --git a/htdocs/comm/mailing/card.php b/htdocs/comm/mailing/card.php
index 678ea8f622d..ef9f29815c4 100644
--- a/htdocs/comm/mailing/card.php
+++ b/htdocs/comm/mailing/card.php
@@ -94,6 +94,13 @@ $object->substitutionarrayfortest=array(
 	//,'__PERSONALIZED__' => 'TESTPersonalized'	// Not used yet
 );
 
+// List of sending methods
+$listofmethods=array();
+$listofmethods['mail']='PHP mail function';
+//$listofmethods['simplemail']='Simplemail class';
+$listofmethods['smtps']='SMTP/SMTPS socket library';
+
+
 
 /*
  * Actions
@@ -741,10 +748,21 @@ else
 			{
                 // Define message to recommand from command line
 
-			    // Pour des raisons de securite, on ne permet pas cette fonction via l'IHM,
-                // on affiche donc juste un message
+				$sendingmode=$conf->global->MAIN_MAIL_SENDMODE;
+				if (empty($sendingmode)) $sendingmode='mail';	// If not defined, we use php mail function
 
-				if (empty($conf->global->MAILING_LIMIT_SENDBYWEB))
+				if (! empty($conf->global->MAILING_NO_USING_PHPMAIL) && $sendingmode == 'mail')
+				{
+					// EMailing feature may be a spam problem, so when you host several users/instance, having this option may force each user to use their own SMTP agent.
+					// You ensure that every user is using its own SMTP server.
+					$linktoadminemailbefore='<a href="'.DOL_URL_ROOT.'/admin/mails.php">';
+					$linktoadminemailend='</a>';
+					setEventMessage($langs->trans("MailSendSetupIs", $listofmethods[$sendingmode]), 'warnings');
+					setEventMessage($langs->trans("MailSendSetupIs2", $linktoadminemailbefore, $linktoadminemailend, $langs->transnoentitiesnoconv("MAIN_MAIL_SENDMODE"), $listofmethods['smtps']), 'warnings');
+					if (! empty($conf->global->MAILING_SMTP_SETUP_EMAILS_FOR_QUESTIONS)) setEventMessage($langs->trans("MailSendSetupIs3", $conf->global->MAILING_SMTP_SETUP_EMAILS_FOR_QUESTIONS), 'warnings');
+					$_GET["action"]='';
+				}
+				else if (empty($conf->global->MAILING_LIMIT_SENDBYWEB))
 				{
 					// Pour des raisons de securite, on ne permet pas cette fonction via l'IHM,
 					// on affiche donc juste un message
@@ -764,7 +782,7 @@ else
                     }
 				    $text.=$langs->trans('ConfirmSendingEmailing').'<br>';
 					$text.=$langs->trans('LimitSendingEmailing',$conf->global->MAILING_LIMIT_SENDBYWEB);
-					print $form->formconfirm($_SERVER['PHP_SELF'].'?id='.$object->id,$langs->trans('SendMailing'),$text,'sendallconfirmed',$formquestion,'',1,260);
+					print $form->formconfirm($_SERVER['PHP_SELF'].'?id='.$object->id,$langs->trans('SendMailing'),$text,'sendallconfirmed',$formquestion,'',1,270);
 				}
 			}
 
diff --git a/htdocs/comm/mailing/cibles.php b/htdocs/comm/mailing/cibles.php
index 49d2f1befa2..75f2399017b 100644
--- a/htdocs/comm/mailing/cibles.php
+++ b/htdocs/comm/mailing/cibles.php
@@ -276,7 +276,8 @@ if ($object->fetch($id) >= 0)
 
 				$obj = new $classname($db);
 
-				$qualified=1;
+				// Check dependencies
+				$qualified=(isset($obj->enabled)?$obj->enabled:1);
 				foreach ($obj->require_module as $key)
 				{
 					if (! $conf->$key->enabled || (! $user->admin && $obj->require_admin))
diff --git a/htdocs/core/class/html.formadmin.class.php b/htdocs/core/class/html.formadmin.class.php
index 042474781d7..30ecadedb55 100644
--- a/htdocs/core/class/html.formadmin.class.php
+++ b/htdocs/core/class/html.formadmin.class.php
@@ -53,9 +53,10 @@ class FormAdmin
 	 * 		@param		array		$filter			Array of keys to exclude in list
 	 * 		@param		int			$showempty		Add empty value
 	 *      @param      int			$showwarning    Show a warning if language is not complete
+	 *      @param		int			$disabled		Disable edit of select
 	 *      @return		string						Return HTML select string with list of languages
 	 */
-	function select_language($selected='',$htmlname='lang_id',$showauto=0,$filter=0,$showempty=0,$showwarning=0)
+	function select_language($selected='',$htmlname='lang_id',$showauto=0,$filter=0,$showempty=0,$showwarning=0,$disabled=0)
 	{
 		global $langs;
 
@@ -63,7 +64,7 @@ class FormAdmin
 
 		$out='';
 
-		$out.= '<select class="flat" id="'.$htmlname.'" name="'.$htmlname.'">';
+		$out.= '<select class="flat" id="'.$htmlname.'" name="'.$htmlname.'"'.($disabled?' disabled="disabled"':'').'>';
 		if ($showempty)
 		{
 			$out.= '<option value=""';
diff --git a/htdocs/langs/en_US/mails.lang b/htdocs/langs/en_US/mails.lang
index 44027b4cc20..6fffc35bb08 100644
--- a/htdocs/langs/en_US/mails.lang
+++ b/htdocs/langs/en_US/mails.lang
@@ -115,7 +115,7 @@ SentBy=Sent by
 MailingNeedCommand=For security reason, sending an emailing is better when performed from command line. If you have one, ask your server administrator to launch the following command to send the emailing to all recipients:
 MailingNeedCommand2=You can however send them online by adding parameter MAILING_LIMIT_SENDBYWEB with value of max number of emails you want to send by session. For this, go on Home - Setup - Other. 
 ConfirmSendingEmailing=If you can't or prefer sending them with your www browser, please confirm you are sure you want to send emailing now from your browser ?
-LimitSendingEmailing=Note: On line sending of emailings are limited for security and timeout reasons to <b>%s</b> recipients by sending session.
+LimitSendingEmailing=Note: Sending of emailings from web interface is done in several times for security and timeout reasons, <b>%s</b> recipients at a time for each sending session.
 TargetsReset=Clear list
 ToClearAllRecipientsClickHere=Click here to clear the recipient list for this emailing
 ToAddRecipientsChooseHere=Add recipients by choosing from the lists
@@ -136,3 +136,6 @@ SomeNotificationsWillBeSent=%s notifications will be sent by email
 AddNewNotification=Activate a new email notification target
 ListOfActiveNotifications=List all active email notification targets
 ListOfNotificationsDone=List all email notifications sent
+MailSendSetupIs=Configuration of email sending has been setup to '%s'. This mode can't be used to send mass emailing.
+MailSendSetupIs2=You must first go, with an admin account, into menu %sHome - Setup - EMails%s to change parameter <strong>'%s'</strong> to use mode '%s'. With this mode, you can enter setup of the SMTP server provided by your Internet Service Provider and use Mass emailing feature.
+MailSendSetupIs3=If you have any questions on how to setup your SMTP server, you can ask to %s.
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index d248a8c19ff..15f2281cc1f 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -1300,7 +1300,7 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
 function top_menu($head, $title='', $target='', $disablejs=0, $disablehead=0, $arrayofjs='', $arrayofcss='', $morequerystring='')
 {
     global $user, $conf, $langs, $db;
-    global $dolibarr_main_authentication;
+    global $dolibarr_main_authentication, $dolibarr_main_demo;
     global $hookmanager,$menumanager;
 
     // Instantiate hooks of thirdparty module
@@ -1410,7 +1410,6 @@ function top_menu($head, $title='', $target='', $disablejs=0, $disablehead=0, $a
 	    $logintext.='>'.$user->login.'</a>';
 	    if ($user->societe_id) $logintext.=$companylink;
 	    $logintext.='</div>';
-
 	    $loginhtmltext.='<u>'.$langs->trans("User").'</u>';
 	    $loginhtmltext.='<br><b>'.$langs->trans("Name").'</b>: '.$user->getFullName($langs);
 	    $loginhtmltext.='<br><b>'.$langs->trans("Login").'</b>: '.$user->login;
@@ -1422,9 +1421,9 @@ function top_menu($head, $title='', $target='', $disablejs=0, $disablehead=0, $a
 	    $loginhtmltext.='<br>';
 	    $loginhtmltext.='<br><u>'.$langs->trans("Connection").'</u>';
 	    if (! empty($conf->global->MAIN_MODULE_MULTICOMPANY)) $loginhtmltext.='<br><b>'.$langs->trans("ConnectedOnMultiCompany").'</b>: '.$conf->entity.' (user entity '.$user->entity.')';
+	    $loginhtmltext.='<br><b>'.$langs->trans("AuthenticationMode").'</b>: '.$_SESSION["dol_authmode"].(empty($dolibarr_main_demo)?'':' (demo)');
 	    $loginhtmltext.='<br><b>'.$langs->trans("ConnectedSince").'</b>: '.dol_print_date($user->datelastlogin,"dayhour");
 	    $loginhtmltext.='<br><b>'.$langs->trans("PreviousConnexion").'</b>: '.dol_print_date($user->datepreviouslogin,"dayhour");
-	    $loginhtmltext.='<br><b>'.$langs->trans("AuthenticationMode").'</b>: '.$_SESSION["dol_authmode"];
 	    $loginhtmltext.='<br><b>'.$langs->trans("CurrentTheme").'</b>: '.$conf->theme;
 	    $loginhtmltext.='<br><b>'.$langs->trans("CurrentMenuManager").'</b>: '.$menumanager->name;
 	    $s=picto_from_langcode($langs->getDefaultLang());
diff --git a/htdocs/user/param_ihm.php b/htdocs/user/param_ihm.php
index 65e9e4ca7a6..7459d467633 100644
--- a/htdocs/user/param_ihm.php
+++ b/htdocs/user/param_ihm.php
@@ -179,10 +179,10 @@ if ($action == 'edit')
     print ($conf->global->MAIN_LANG_DEFAULT=='auto'?$langs->trans("AutoDetectLang"):$langs->trans("Language_".$conf->global->MAIN_LANG_DEFAULT));
     print '</td>';
     print '<td align="left" class="nowrap" width="20%"><input '.$bc[$var].' name="check_MAIN_LANG_DEFAULT" id="check_MAIN_LANG_DEFAULT" type="checkbox" '.(! empty($fuser->conf->MAIN_LANG_DEFAULT)?" checked":"");
-    print ! empty($dolibarr_main_demo)?' disabled="disabled"':'';	// Disabled for demo
+    print empty($dolibarr_main_demo)?'':' disabled="disabled"';	// Disabled for demo
     print '> '.$langs->trans("UsePersonalValue").'</td>';
     print '<td>';
-    print $formadmin->select_language((! empty($fuser->conf->MAIN_LANG_DEFAULT)?$fuser->conf->MAIN_LANG_DEFAULT:''),'main_lang_default',1);
+    print $formadmin->select_language((! empty($fuser->conf->MAIN_LANG_DEFAULT)?$fuser->conf->MAIN_LANG_DEFAULT:''),'main_lang_default',1,null,0,0,(! empty($dolibarr_main_demo)));
     print '</td></tr>';
 
     // Taille max des listes
@@ -190,7 +190,7 @@ if ($action == 'edit')
     print '<tr '.$bc[$var].'><td>'.$langs->trans("MaxSizeList").'</td>';
     print '<td>'.$conf->global->MAIN_SIZE_LISTE_LIMIT.'</td>';
     print '<td align="left" class="nowrap" width="20%"><input '.$bc[$var].' name="check_SIZE_LISTE_LIMIT" id="check_SIZE_LISTE_LIMIT" type="checkbox" '.(! empty($fuser->conf->MAIN_SIZE_LISTE_LIMIT)?" checked":"");
-    print ! empty($dolibarr_main_demo)?' disabled="disabled"':'';	// Disabled for demo
+    print empty($dolibarr_main_demo)?'':' disabled="disabled"';	// Disabled for demo
     print '> '.$langs->trans("UsePersonalValue").'</td>';
     print '<td><input class="flat" name="main_size_liste_limit" id="main_size_liste_limit" size="4" value="' . (! empty($fuser->conf->MAIN_SIZE_LISTE_LIMIT)?$fuser->conf->MAIN_SIZE_LISTE_LIMIT:'') . '"></td></tr>';