diff --git a/core/attributedef.class.inc.php b/core/attributedef.class.inc.php
index c9dcd66ed..1626522f7 100644
--- a/core/attributedef.class.inc.php
+++ b/core/attributedef.class.inc.php
@@ -359,6 +359,7 @@ class AttributeLinkedSet extends AttributeDefinition
 	{
 		return "ERROR: LIST OF OBJECTS";
 	}
+	public function DuplicatesAllowed() {return false;} // No duplicates for 1:n links, never
 }
 
 /**
@@ -375,6 +376,7 @@ class AttributeLinkedSetIndirect extends AttributeLinkedSet
 	public function IsIndirect() {return true;} 
 	public function GetExtKeyToRemote() { return $this->Get('ext_key_to_remote'); }
 	public function GetEditClass() {return "LinkedSet";}
+	public function DuplicatesAllowed() {$bRet = $this->GetOptional("duplicates", false); echo "<p>Dups: $bRet</p>"; return $bRet;} // The same object may be linked several times... or not...
 }
 
 /**
@@ -1086,6 +1088,11 @@ class AttributeEmailAddress extends AttributeString
 	{
 		return "^([0-9a-zA-Z]([-.\\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\\w]*[0-9a-zA-Z]\\.)+[a-zA-Z]{2,9})$";
 	}
+
+	public function GetAsHTML($sValue)
+	{
+		return '<a class="mailto" href="mailto:'.$sValue.'">'.parent::GetAsHTML($sValue).'</a>';
+	}
 }
 
 /**
diff --git a/core/dbobject.class.php b/core/dbobject.class.php
index 19327ebfc..22504c0d4 100644
--- a/core/dbobject.class.php
+++ b/core/dbobject.class.php
@@ -400,7 +400,8 @@ abstract class DBObject
 			$aAvailableFields = array();
 			foreach ($aExtKeyFriends as $sDispAttCode => $oExtField)
 			{
-				$aAvailableFields[$oExtField->GetExtAttCode()] = $oExtField->GetAsHTML($this->Get($oExtField->GetCode()));
+//				$aAvailableFields[$oExtField->GetExtAttCode()] = $oExtField->GetAsHTML($this->Get($oExtField->GetCode()));
+				$aAvailableFields[$oExtField->GetExtAttCode()] = $this->Get($oExtField->GetCode());
 			}
 
 			$sTargetClass = $oAtt->GetTargetClass(EXTKEY_ABSOLUTE);
diff --git a/css/light-grey.css b/css/light-grey.css
index 7b7d6e44b..089a4b059 100644
--- a/css/light-grey.css
+++ b/css/light-grey.css
@@ -172,6 +172,19 @@ td a.no-arrow:hover {
 	padding-left:0px;
 	background: inherit;
 }
+td a.mailto, td a.mailto:visited {
+	text-decoration:none;
+	color:#000000;
+	padding-left:20px;
+	background: url(../images/mail.png) no-repeat left;
+}
+td a.mailto:hover {
+	text-decoration:underline;
+	color:#EB8F00;
+	padding-left:20px;
+	background: url(../images/mail.png) no-repeat left;
+}
+
 a.small_action {
     font-family: Tahoma, Verdana, Arial, Helvetica;
     font-size: 8pt;
diff --git a/images/mail.png b/images/mail.png
new file mode 100644
index 000000000..209400799
Binary files /dev/null and b/images/mail.png differ