diff --git a/htdocs/admin/mailing.php b/htdocs/admin/mailing.php
index 30b92412719..1c96ce68780 100644
--- a/htdocs/admin/mailing.php
+++ b/htdocs/admin/mailing.php
@@ -123,7 +123,7 @@ print '</td></tr>';
 
 print '<tr class="oddeven"><td>';
 print $langs->trans("MailingDelay").'</td><td>';
-print '<input size="32" type="text" name="MAILING_DELAY" value="'.$conf->global->MAILING_DELAY.'">';
+print '<input class="width75" type="text" name="MAILING_DELAY" value="'.$conf->global->MAILING_DELAY.'">';
 print '</td></tr>';
 
 
diff --git a/htdocs/comm/mailing/card.php b/htdocs/comm/mailing/card.php
index 1a3a1c9fe62..d5187bb2ab8 100644
--- a/htdocs/comm/mailing/card.php
+++ b/htdocs/comm/mailing/card.php
@@ -331,11 +331,10 @@ if (empty($reshook))
 								}
 							}
 
-							if (!empty($conf->global->MAILING_DELAY))
-							{
-								dol_syslog("Wait a delay of MAILING_DELAY=".$conf->global->MAILING_DELAY);
-								sleep($conf->global->MAILING_DELAY);
-							}
+						    if (!empty($conf->global->MAILING_DELAY)) {
+						    	dol_syslog("Wait a delay of MAILING_DELAY=".$conf->global->MAILING_DELAY);
+                            	usleep((float) $conf->global->MAILING_DELAY * 1000000);
+                        	}
 
 							//test if CHECK READ change statut prospect contact
 						} else {
diff --git a/htdocs/comm/mailing/cibles.php b/htdocs/comm/mailing/cibles.php
index 0d621dfa186..81f64ef6016 100644
--- a/htdocs/comm/mailing/cibles.php
+++ b/htdocs/comm/mailing/cibles.php
@@ -463,24 +463,51 @@ if ($object->fetch($id) >= 0)
 	$sql .= " mc.source_url, mc.source_id, mc.source_type, mc.error_text";
 	$sql .= " FROM ".MAIN_DB_PREFIX."mailing_cibles as mc";
 	$sql .= " WHERE mc.fk_mailing=".$object->id;
-	if ($search_lastname)  $sql .= natural_search("mc.lastname", $search_lastname);
-	if ($search_firstname) $sql .= natural_search("mc.firstname", $search_firstname);
-	if ($search_email)     $sql .= natural_search("mc.email", $search_email);
-	if ($search_other)     $sql .= natural_search("mc.other", $search_other);
-	if ($search_dest_status != '' && $search_dest_status >= -1) $sql .= " AND mc.statut=".$db->escape($search_dest_status)." ";
+	$asearchcriteriahasbeenset = 0;
+	if ($search_lastname)  {
+		$sql .= natural_search("mc.lastname", $search_lastname);
+		$asearchcriteriahasbeenset++;
+	}
+	if ($search_firstname) {
+		$sql .= natural_search("mc.firstname", $search_firstname);
+		$asearchcriteriahasbeenset++;
+	}
+	if ($search_email)     {
+		$sql .= natural_search("mc.email", $search_email);
+		$asearchcriteriahasbeenset++;
+	}
+	if ($search_other)     {
+		$sql .= natural_search("mc.other", $search_other);
+		$asearchcriteriahasbeenset++;
+	}
+	if ($search_dest_status != '' && $search_dest_status >= -1) {
+		$sql .= " AND mc.statut=".$db->escape($search_dest_status)." ";
+		$asearchcriteriahasbeenset++;
+	}
 	$sql .= $db->order($sortfield, $sortorder);
 
 	// Count total nb of records
 	$nbtotalofrecords = '';
 	if (empty($conf->global->MAIN_DISABLE_FULL_SCANLIST))
 	{
-		$result = $db->query($sql);
-		$nbtotalofrecords = $db->num_rows($result);
-		if (($page * $limit) > $nbtotalofrecords)	// if total resultset is smaller then paging size (filtering), goto and load page 0
-		{
-			$page = 0;
-			$offset = 0;
-		}
+	    $result = $db->query($sql);
+	    $nbtotalofrecords = $db->num_rows($result);
+	    if (($page * $limit) > $nbtotalofrecords) {	// if total resultset is smaller then paging size (filtering), goto and load page 0
+	    	$page = 0;
+	    	$offset = 0;
+	    }
+
+	    // Fix/update nbemail on emailing record if it differs (may happen if user edit lines from database directly)
+	    if (empty($asearchcriteriahasbeenset)) {
+	    	if ($nbtotalofrecords != $object->email) {
+	    		dol_syslog("We found a difference in nb of record in target table and the property ->nbemail, we fix ->nbemail");
+	    		//print "nbemail=".$object->nbemail." nbtotalofrecords=".$nbtotalofrecords;
+	    		$resultrefresh = $object->refreshNbOfTargets();
+	    		if ($resultrefresh < 0) {
+	    			dol_print_error($db, $object->error, $object->errors);
+	    		}
+	    	}
+	    }
 	}
 
 	//$nbtotalofrecords=$object->nbemail;     // nbemail is a denormalized field storing nb of targets
diff --git a/htdocs/comm/mailing/class/mailing.class.php b/htdocs/comm/mailing/class/mailing.class.php
index 2f2b16bd119..17b5a779617 100644
--- a/htdocs/comm/mailing/class/mailing.class.php
+++ b/htdocs/comm/mailing/class/mailing.class.php
@@ -510,6 +510,8 @@ class Mailing extends CommonObject
 		dol_syslog("Mailing::delete_targets", LOG_DEBUG);
 		$resql = $this->db->query($sql);
 		if ($resql) {
+			$this->refreshNbOfTargets();
+
 			return 1;
 		} else {
 			$this->error = $this->db->lasterror();
@@ -577,6 +579,38 @@ class Mailing extends CommonObject
 		return 0;
 	}
 
+	/**
+	 *  Refresh denormalized value ->nbemail into emailing record
+	 *  Note: There is also the method update_nb into modules_mailings that is used for this.
+	 *
+	 *  @return int        		<0 if KO, >0 if OK
+	 */
+	public function refreshNbOfTargets()
+	{
+		$sql = "SELECT COUNT(rowid) as nb FROM ".MAIN_DB_PREFIX."mailing_cibles";
+		$sql .= " WHERE fk_mailing = ".$this->id;
+
+		$resql = $this->db->query($sql);
+		if ($resql) {
+			$obj = $this->db->fetch_object($resql);
+			if ($obj) {
+				$nbforupdate = $obj->nb;
+
+				$sql = 'UPDATE '.MAIN_DB_PREFIX.'mailing SET nbemail = '.((int) $nbforupdate);
+				$sql .= ' WHERE rowid = '.$this->id;
+
+				$resqlupdate = $this->db->query($sql);
+				if (! $resqlupdate) {
+					$this->error = $this->db->lasterror();
+					return -1;
+				}
+			}
+		} else {
+			$this->error = $this->db->lasterror();
+			return -1;
+		}
+		return 1;
+	}
 
 	/**
 	 *  Return a link to the object card (with optionally the picto)
diff --git a/scripts/emailings/mailing-send.php b/scripts/emailings/mailing-send.php
index fab2452c2b8..fcaa40e1fde 100755
--- a/scripts/emailings/mailing-send.php
+++ b/scripts/emailings/mailing-send.php
@@ -74,6 +74,10 @@ if (empty($conf->global->MAILING_LIMIT_SENDBYCLI))
 @set_time_limit(0);
 print "***** ".$script_file." (".$version.") pid=".dol_getmypid()." *****\n";
 
+if (!empty($conf->global->MAILING_DELAY)) {
+	print 'A delay of '.((float) $conf->global->MAILING_DELAY * 1000000).' millisecond has been set between each email'."\n";
+}
+
 if ($conf->global->MAILING_LIMIT_SENDBYCLI == '-1') {}
 
 $user = new User($db);
@@ -332,7 +336,7 @@ if ($resql) {
 								}
 
 								if (!empty($conf->global->MAILING_DELAY)) {
-									sleep($conf->global->MAILING_DELAY);
+									usleep((float) $conf->global->MAILING_DELAY * 1000000);
 								}
 							}
 						} else {